How to Dry Mens Swimwear Properly: 7 Mistakes That Shorten Its Lifespan

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You open the beach bag three days after returning from a 10-day holiday in Mallorca. You smell it before you see it — a strange chlorine-musty odour clinging to the towel that no airing will remove. The swimwear spent four hours in the hot beach bag, another two in the sun-baked car ride to the airport. Back home, you tossed it straight into the tumble dryer on the delicates programme so it would be ready by morning — you have a pool session booked for Wednesday.

Six months later you notice the elastic waistband, when stretched in your hands for five seconds, no longer snaps back to its original shape. After twelve months the colour around the lining looks faded and patchy. After eighteen months your luxury mens swimwear ends up in the bin — not because it tore, but because it no longer holds its shape or its colour. A pair of swim shorts priced at €50, which should have represented the real quality difference, lasted you 18 months. It should have lasted five years.

A single cycle in the tumble dryer can cost you an entire season of lifespan. This is not marketing — it is measurable polyester-fibre physics. A 2024 peer-reviewed study published in the journal Polymers (MDPI) documented that textile loses up to 65.7% of tear strength after 300 hours of chlorine and sun exposure. A textile scientist quoted by Phys.org in January 2026 translated that into real-world context: 300 hours corresponds to roughly 35 days of intensive summer use — or a single bad season with poor drying and storage. Manufacturers such as Speedo confirm this in their official care guides: "no wringing, no tumble dryer, no direct sunlight."

At DESSUE we have been working with premium mens swimwear made from Hi-Tech polyester for 19 years. From thousands of real customer situations, returns and questions, we know the difference between swimwear that lasts 1.5 seasons and the same swimwear lasting 5 seasons is not in the price or the brand. It is in the routine between swims. This guide describes that routine, step by step. The principle of water and moisture wicking was covered in detail in a separate technical article.

Table of contents

• Why drying decides the lifespan of your swimwear
• Mistake #1: Tumble dryer – the fastest way to destroy swimwear
• Mistake #2: Direct sunlight – UV and pigment oxidation
• Mistake #3: Wringing and hair dryer – microcracks in fibres
• Mistake #4: Hanging by the waistband – loss of elastic memory
• Mistake #5: Wet swimwear in a bag or car
• Mistake #6: Drying on a radiator – thermal shock
• Mistake #7: Storing while damp
• How we recognise a client who dried wrongly – 3 signs from 19 years of DESSUE practice
• How to dry properly: 5-step process + 8 methods compared
• Drying after the sea vs. after the pool – chemical differences
• Materials: Hi-Tech polyester, polyamide, cotton
• Time horizon: home, hotel, travel
• 5-year calculation: the real cost of poor care

Why drying decides how many seasons your swimwear will last

The fibres of mens swimwear made from Hi-Tech polyester (typically the Roberto LUCCA 10152, 10153, 10129 series) are engineered for 3–5 seasons of intensive use. But this lifespan potential is not reduced by swimming itself — it is reduced by the phase between bathing and the next use. Drying and storage take up 90% of the time the swimwear spends in the state where mechanical and chemical damage to the fibre can occur.

The Polymers study (MDPI 2024) systematically measured the effect of chlorine and sunlight on different polymer-elastane blends. Key results: tear strength drops by 12.4% after 200 hours and by 65.7% after 300 hours. Material thickness increases (the fibre frays), surface mass increases (microdamage retains moisture). Elastane degrades first — the weakest link in the chain. And exactly during drying, when the water evaporates and chlorine concentrates, degradation peaks. The chemical mechanisms were detailed in our separate article on how chlorine affects the durability of mens swimwear.

During drying, four things are decided simultaneously:

• Loss of elastic memory — the elastomer fibre (elastane, spandex, Lycra) in the waistband permanently deforms when stretched in a wet state
• Polymer microdamage — thermal shock above 40 °C in a wet state breaks the polyester chains in the crystalline phase
• Pigment oxidation — UV radiation and heat oxidise the dye molecules; dark colours lose saturation fastest
• Microbiological contamination — moisture + warmth + closed space = exponential growth of Pseudomonas and Aspergillus within 90 minutes

This is why two identical Roberto LUCCA shorts can last completely different lengths of time if treated differently. The material is the same. The difference lies in the routine.

Mistake #1: Tumble dryer – the fastest way to destroy swimwear

The tumble dryer is the worst possible way to dry swimwear. Without exception. Speedo states this clearly in its official care guide: no programme is safe for swimwear.

What happens in the drum: the delicates cycle typically reaches 45–55 °C; the normal cycle 60–75 °C. The deformation threshold of Hi-Tech polyester (the point of permanent fibre damage) is around 50 °C. Elastane and spandex begin to soften at 70 °C. In addition to temperature, the drum mechanically loads the water-filled material.

Real impact: after a single cycle at 60 °C, the swimwear loses 15–25% of waistband elasticity. After three cycles the waistband no longer holds — the swimwear falls down during swimming. Lifespan drops from 4 seasons to 1.5–2. This is the difference between properly used quality mens swimwear and the same swimwear used wrongly.

How to avoid: never. Not even the cold air mode is safe — the mechanical rotation of the drum stresses the elastomer fibre even when cold. If time is short, use the towel method (see #3) and partial shade with airflow.

Mistake #2: Direct sunlight – UV as a slow killer of colour and fibre

Many men dry swimwear in the sun — over an umbrella, on the balcony railing, on the backrest of a sun lounger. The logic seems right: sun + wind = quick drying. The reality is different. Speedo and Arena both formulate it in their official care guides: "avoid direct sunlight".

What happens: UV-A and UV-B radiation oxidise polyester dye pigments and accelerate photodegradation of polymer chains. In intense July sunlight (UV index 8+), fading is measurable after 4–6 hours of cumulative exposure. Dark colours (black, navy, burgundy) are especially vulnerable — they absorb more energy. In the sun, elastane loses elasticity faster than polyester.

Real impact: after a two-week holiday with daily drying in the sun after bathing, fading of dark colours is visible at the level of 8–15%. After two seasons, the difference is visible to the naked eye. Colour loss goes hand in hand with shape loss — both phenomena were discussed comprehensively in our article why mens swimwear loses its shape over time – and which ones do not.

How to avoid: dry in partial shade with airflow — under a balcony, under a poolside parasol, near an open window. Short exposure (max 20 minutes) to the sun after initial sand shaking is fine, but long drying is exclusively for shade.

Mistake #3: Wringing and hair dryer – microcracks in the fabric structure

You come out of the hotel pool and want dry swimwear for an evening walk. You wring it hard in the shower, then blow-dry it with the hotel hair dryer from 20 cm away. Both are wrong.

What happens when wringing: polyester fibre has limited flexibility. Twisting the fabric creates microcracks in individual fibres — invisible to the naked eye, but significantly reducing resistance to chlorine, UV and wear at the next bathing. After 8–10 wringing cycles, the fabric starts to pill.

What happens with the hair dryer: hot air from the dryer is 70–95 °C — twice the safe temperature for polyester. Localised exposure to this temperature in a wet state is worse than the tumble dryer because the heat concentrates on a small area.

How to avoid: never wring! Use the technique that Speedo prescribes in its official guide: lay the swimwear flat on a dry towel, roll the towel up like a rug, and press with your hands 2–3 times. You absorb 60–70% of the water without damaging the fibres. Use the hair dryer only in extreme cases, on the cold setting, from at least 30 cm away. These rules apply equally to mens swim shorts as to briefs or boxers — the material reacts the same, only the surface texture differs.

Mistake #4: Hanging by the waistband – loss of elastic memory in a single season

This is the most common mistake of all. The swimwear is hung by the elastic waistband on a hanger or washing line — the leg part dangles down loaded with 200–400 g of water.

What happens: the elastomer fibre in the waistband (elastane/spandex) has elasticity, but repeated stretching in a wet state permanently reduces it. In the textile industry this phenomenon is called plastic deformation of the elastomer polymer. The memory yarn principle — that elastane needs 24 hours of rest to return to its original shape — is compromised by the weight of the wet swimwear. In Hi-Tech swimwear, the waistband also contains silicone grippers or a rubber strip, which gradually separate from the fabric when stretched in a wet state. The waistband construction in premium models is carefully designed — but with a poor drying routine you can nullify this advantage in a single season. The mechanisms of shape loss were detailed in a separate article.

Real impact: after one season of hanging by the waistband, the swimwear loses 8–12% of elasticity. After two seasons it falls down during swimming. After three, the waistband stretches even during dry use.

How to avoid: dry the swimwear flat (ideally on a dry towel) or on a hanger by the leg hem, never by the waistband. Speedo Malaysia formulates this literally: "store flat or rolled, do not hang" — this prevents stretching. The anatomical construction of swimwear — how the basket, waistband and silicones work together — is described in detail in our article on anatomical fit and basket shaping.

Mistake #5: Wet swimwear in a bag or car – bacteria, odour, mould

The last day of a holiday in Mallorca. 8:00 — morning swim. 9:30 — swimwear in the beach bag. 12:00 — lunch in town, bag on the back of the chair at 28 °C. 14:30 — drive to the airport, bag in the sun-heated car. 18:00 — the plane. 22:00 — home, bag in the hallway. The swimwear has spent 12.5 hours in darkness, moisture and warmth without airflow.

What happens: moisture + 25–30 °C + closed space + residual sweat and sunscreen = ideal conditions for Pseudomonas aeruginosa (the bacterium responsible for the chlorine-musty smell) and Aspergillus niger (black mould). Pseudomonas multiplies exponentially after 90 minutes. The smell you feel two days later is not chlorine itself but the metabolic by-products of these bacteria feeding on the chlorine retained in the fibre and organic compounds.

Real impact: after such a cycle, the swimwear can sometimes be saved with intensive washing (not always). After three or four, the smell permanently settles in the fibre — no professional cleaning will remove it. Small black mould spots may also appear, which compromise the integrity of the material.

How to avoid: never leave wet swimwear in a closed space for more than 30 minutes. Speedo and Simply Swim recommend transport in a mesh bag, not in a full bag or plastic bag. At home, on arrival, lay out the swimwear immediately, even if you go to sleep — overnight drying is always better than 8 hours in the bag.

Mistake #6: Drying on a radiator or above the stove – thermal shock

In cooler months or in the mountains, men put swimwear on the radiator. "Fast, dry room, no problem." In the kitchen often above the stove or oven. Both are a form of thermal shock.

What happens: the surface temperature of a radiator is 45–70 °C. Exposing Hi-Tech polyester to this temperature in a wet state changes the crystalline structure of the fibre and makes it brittle. Above a stove the situation is even worse — the air temperature momentarily reaches 80–120 °C. Thermal shock also affects surface treatments such as DWR (durable water repellent) and technical polyester coatings, which in the long term influences how quickly the swimwear will dry in the following seasons. The mechanisms of fast drying and moisture wicking were discussed comprehensively in a separate technical article.

Real impact: swimwear dried on a radiator loses 20–30% of tear strength per season. At the next bathing in chlorine or salt water, the fibre breaks much sooner. After two winters of radiator drying, even designer mens swimwear cannot withstand normal swimming.

Hand test: touch the radiator with the back of your hand and hold for 5 seconds. If you cannot bear it, neither can the swimwear. Always dry at room temperature in a well-ventilated room — better 5 hours in the bathroom with the window ajar than 1 hour on a heat source.

Mistake #7: Storing while damp – the silent mould

The last mistake is silent. The swimwear seems dry — you do not feel it as wet, your fingers do not come away damp. But in the deeper layers (lining, inside of the waistband, seams) 8–15% moisture remains.

What happens: in a closed cupboard, residual moisture distributes evenly through the fabric and creates an environment for Aspergillus, Cladosporium and other moulds. They appear as small grey-black spots — irreversible, not removable even by professional cleaning. This is where the difference shows most between luxury mens swimwear with antibacterially treated fibre and ordinary swimwear: the fabric of premium swimwear is chemically treated in an antimicrobial way, which reduces the risk of mould, although it does not exclude it completely.

Real impact: after 3–4 months of storage in a closed cupboard, small mould spots can appear, especially in the lining and at the seams. Seasonal storage (September → March) carries the highest risk.

How to avoid: let the swimwear dry completely for 6–8 hours in a well-ventilated room after every bathing — not just 2 hours. Before storage, check the inner layers by hand. Store in a breathable textile bag, never in plastic. At the end of the season add an antibacterial sachet or a cedar twig. Speedo Malaysia also recommends swimwear rotation — for regular swimming you should own two pairs and use them alternately, so that the elastane has 24 hours of rest between wears.

How we recognise a client who dried wrongly – 3 signs from 19 years of DESSUE practice

Based on 19 years of experience in the premium mens swimwear segment, we recognise the client who has dried wrongly before the question. Three patterns recur in returns, exchanges and care queries:

1. The waistband holds the structure but not the shape. Swimwear stretched by hand for 5 seconds does not return to its original length — the elastomer fibre has undergone plastic deformation. This pattern almost always means hanging by the waistband or tumble drying. Sometimes both habits at once. Swimwear with such damage has a lifespan of a maximum of 12 months.

2. Uneven fading around the lining. The inside of the leg part is duller in colour than the outer surface. A classic sign of drying with the lining facing up in direct sunlight — UV oxidises pigments from the inside, where manufacturers do not apply UV stabilisers. The outer surface is "protected" with UV treatment; the inner is not.

3. A typical chlorine-musty smell that persists after washing. Deep Pseudomonas aeruginosa colonisation from long damp storage — most often from beach bags, rucksacks or plastic bags. After 3–4 such cycles, the smell becomes permanent.

If you see any of these signs on your swimwear, the problem is not in the quality of the material or the brand. Real quality of mens swimwear is decided by the sum of construction and care. The material you choose once. Care decides after every bathing.

How to dry properly: 5-step process + comparison of 8 methods

This is the professional 5-step process that keeps quality mens swimwear functional for 4–5 seasons. The process is aligned with the official Speedo and Arena recommendations, supplemented by observations from our practice.

1. Immediate rinse with fresh water. After every pool or sea bathing, rinse the swimwear under the shower with lukewarm fresh water for 60–90 seconds. You wash out chlorine, salt, sand and sunscreen residues. Manufacturers mark this step as the most important.
2. Press the moisture into a towel, do not wring. Lay the swimwear flat on a dry towel, roll up the towel like a rug, press with your hands 2–3 times. You absorb 60–70% of the water without damaging the fibres.
3. Flat or by the leg hem. Place the swimwear on a dry towel or on a hanger by the leg hem — never by the waistband. When hanging, spread it out symmetrically.
4. Dry in partial shade with airflow. Optimal place: under a balcony, near an open window, on a terrace with a parasol. Temperature 15–25 °C, away from direct sun and heat sources.
5. Check before storing. After 4–6 hours, run your hand over the inner layers — lining, inside of the waistband, seams. Only then put it in a breathable bag or on a hanger.

Comparison of the 8 most common drying methods across 8 parameters:

Drying after the sea vs. after the pool – chemical differences

Drying after salt water and after chlorinated water carries different chemical risks. Physically, the material dries the same, but the chemical residues in the fibre cause different damage.

After the sea: salt crystallises in the material after water evaporates, forming microscopic salt crystals. At the next bathing and drying, they mechanically wear the fibre from the inside. Solution: 2–3 minutes of rinsing under fresh water with light pressure before drying.

After the pool: chlorine does not settle like salt — instead, it chemically attacks elastomer fibres and dye pigments. The strongest degradation happens exactly during drying — when water evaporates, chlorine concentrates. The Polymers study (2024) showed that chlorine + sunlight together act synergistically in degradation — more strongly than chlorine alone. In thermal pools and jacuzzis the situation is even more pronounced because the chlorine concentration is 2–3 times higher — a phenomenon discussed in our analysis of the effect of chlorine on the durability of mens swimwear.

These chemical differences also affect other parameters — from lifespan to wear comfort — and were discussed in a separate article on swimwear for the sea vs. the pool – what makes a real difference. In both cases, the 30-minute rule applies — the swimwear must be rinsed and laid out within 30 minutes of leaving the water.

Hi-Tech polyester, polyamide, cotton – three materials, three approaches

Not all swimwear dries the same way. The material composition fundamentally changes the optimal conditions and times.

Hi-Tech polyester (the dominant material at Roberto LUCCA and most modern premium swimwear): tolerates 15–25 °C, dries in 2–4 hours, sensitive above 40 °C, tolerates partial shade. The least demanding of the three materials at drying, thanks to the low water absorption capacity (<5% of weight). The Hi-Tech polyester capacity for rapid water drainage is the result of a specific fabric structure — the principle how fast drying works in practice (not in marketing) was explained in a separate technical article.

Polyamide (nylon): tolerates higher temperatures (up to 35 °C) but with weaker UV resistance — the fibre becomes brittle in the sun faster than polyester. The Polymers study (2024) confirmed that the rate of polyamide degradation also depends on water acidity. Drying takes 3–5 hours, always in shade. Polyamide swimwear often combines water-repellent coatings — a phenomenon that leads to shape loss, discussed in a separate article.

Cotton and cotton blends: used occasionally in swimwear with looser cut. Longest drying time (5–8 hours), sensitive to deformation under wet stretching, may shrink by 5–10% after repeated drying.

If you are not sure what material your swimwear contains, follow the Hi-Tech polyester rules — they are the strictest and work for any other material.

Time horizon for drying: home, hotel, travel

Here is a realistic estimate of drying time in different conditions. For Hi-Tech polyester (the most common premium mens swimwear material):

Hotel: open window + shaded terrace = ideal. A/C room without ventilation = open the window. Do not put on the A/C unit or bathroom heater — thermal shock.

Caravan and camping: roof vents are best. Mesh bag on the outside works while moving too. Bring inside at night (dew). Tent: rope between two trees in shade, never on the upper wall of the tent (condensation + sun).

Air travel: before departure pack the wet swimwear so that it is on top of the suitcase or separately in a mesh bag. In the suitcase under other things = the 90-minute bacteria threshold is crossed already during the flight.

Rule of two pairs: if you go back into the water the same day, pack two pairs — one dry, the other drying. Simply Swim and Speedo formulate this as the principle of memory yarn rotation: elastane needs 24 hours of rest between wears. That is why experienced travellers pack 2–3 pairs — whether it is mens brief swimwear for training, shorts for the beach or a combination of both — when going to the sea.

5-year calculation: the real cost of poor care

Model scenario: a man who buys quality mens swimwear at the upper quality threshold (€50–80), uses it actively for two seasons a year, goes to the sea once a year.

Scenario A – Wrong drying (tumble dryer, sun, hanging by waistband, wet in bag):

• Lifespan: 1.5–2 seasons per pair
• 5-year financial cost: €50 × 3 replacements + current pair = €200
• Permanent odour risk: 60–70%
• Fading and shape loss: visible after 6 months

Scenario B – Proper drying (rinse, flat/leg hem, partial shade, check before storing):

• Lifespan: 4–5 seasons per pair
• 5-year financial cost: €50 + possibly 1 replacement = €50–100
• Permanent odour risk: below 5%
• Fading: minimal, swimwear still looks new after 3 seasons

Financial difference over 5 years: €100–150. But the financial comparison is only half the story. The hidden time and emotional cost of poor care:

• 3 new purchases mean 3× finding the right size, 3× waiting 2–5 days for delivery, 3× uncertainty whether the colour on screen matches reality
• About 1.5 hours per purchase cycle = total roughly 4.5 hours over 5 years
• Plus the emotional discomfort when the swimwear falls down during a July swim or looks faded in the mirror on the way to the beach

For a man who chooses swimwear once and wants to be sure of quality, proper care means not just saving €100–150 over 5 years, but a guarantee that the swimwear serves with the look and performance of day one. That is why owners of premium Roberto LUCCA shorts — including the short-cut icons launched in 2012 — dry differently than owners of €5 hypermarket shorts. Not because of the care label, but because of how they relate to what they chose with intent.

Conclusion

Drying is not complicated, but it is important. The seven mistakes we have discussed reduce to one sentence: protect the swimwear from heat, from stretching while wet, and from closed moisture.

If you buy quality mens swimwear once and want it to serve three or more seasons, the 10-minute investment per bathing in proper drying pays back many times over. The Hi-Tech materials of modern swimwear are quality enough for any water — they are only sensitive to how you treat them between bathing.

At DESSUE we have been working with the premium Roberto LUCCA brand for 19 years. Based on thousands of real experiences we know: swimwear that lasts 4+ seasons always has one thing in common — an owner who rinsed it after every bathing, dried it flat in shade, and never put it in the cupboard with a suspicion that it might still be wet inside. This routine makes the real difference between luxury and regular swimwear visible even after five seasons.

Concrete action after reading this article: take the swimwear out of the last holiday or from the pool. Check the lining inside by hand. If it seems duller than the outer surface or you smell a wet-chemical odour — you know why. And you know what to do differently from now on.

The content of the article was compiled by DESSUE specialists based on 19 years of experience in the premium mens swimwear segment, continuous collaboration with the Roberto LUCCA brand, and verified expert sources such as the peer-reviewed Polymers study (MDPI 2024), the official care guides of Speedo and Arena manufacturers, and publications by the Phys.org portal.

Related articles

• What chlorine does to swimwear and how it affects durability
• Why mens swimwear loses its shape over time – and which ones do not
• How fast drying works in practice (not in marketing)
• Swimwear for the sea vs. the pool – what makes a real difference
• Quality mens swimwear – what really determines the quality
• Anatomical fit and basket shaping in mens swimwear
• Mens swimwear 2026 – a trend that started in 2012

Frequently asked questions

How quickly does mens swimwear made of Hi-Tech polyester dry?

In partial shade at 22–25 °C with light airflow it dries in 2–3 hours. In an A/C room or cooler space, count on 3–5 hours. Completely dry swimwear, including the lining, the inside of the waistband and the seams, is usually ready in 4–6 hours. Speedo and Arena recommend a total of 24 hours of drying before the next use — the principle of water drainage and memory yarn regeneration of elastane.

Can I dry swimwear in the tumble dryer on the delicates mode?

No. No tumble dryer cycle is safe — Speedo states this clearly in its official care guide. Even delicates reaches 45–55 °C, above the threshold of Hi-Tech polyester and elastomer fibre. Plus the mechanical rotation of the drum stresses the fibre even in the cold air mode. The tumble dryer reduces lifespan from 4 seasons to 1.5–2 after just one or two cycles.

How can I dry quickly while travelling without time?

The best quick method is the towel-rolling technique that Speedo prescribes in its official guide: lay the swimwear flat on a dry towel, roll up the towel like a rug, press with your hands 3–4 times. You absorb 60–70% of the water without damaging the fibres. Then lay out the swimwear for another 1.5–2 hours in partial shade with airflow.

Why must swimwear not be hung by the elastic waistband?

The elastomer fibre in the waistband (elastane/spandex) has elasticity, but repeated stretching while wet plus the weight of the hanging part (200–400 g of water) causes plastic deformation. The loss of elasticity is irreversible. After one season of hanging by the waistband, the swimwear can lose 8–12% of elasticity. That is why Speedo Malaysia recommends: "store flat or rolled, do not hang".

Is it enough to wring the swimwear and hang it in the sun?

Neither. Wringing creates microcracks in the fibres (Speedo: "do not wring"); direct sun fades the colour and accelerates photodegradation of the polymer. The proper process: gently press the moisture into a towel (do not wring) and dry in partial shade.

Should I dry swimwear after every use, or is every few days enough?

After every use. Wet storage for more than 2 hours leads to multiplication of Pseudomonas bacteria, which cause permanent odour. Ideal: rinse with fresh water, dry in partial shade, at least 6 hours of ventilation before next use.

What do I do with wet swimwear during a 6-hour wait at the airport?

Never leave it in a closed bag. Speedo and Simply Swim recommend a mesh bag, where the swimwear has contact with the air. If you have access to the airport toilet, lay out the swimwear for 10–15 minutes on a clean surface — at least the surface will dry and odour bacteria will not have time to multiply.

Do I need to rinse swimwear after a jacuzzi or hotel shower?

Yes, especially after a jacuzzi. Hotel jacuzzis and thermal pools often have 2–3 times higher chlorine concentrations than a normal pool, plus other disinfectants — a phenomenon discussed in detail in our article on the effect of chlorine on the material. After a jacuzzi, rinsing with fresh water is even more important than after a normal pool. After a hotel shower (with fresh water) rinsing is not necessary, but the swimwear must still be allowed to dry completely before storage.

My swimwear smells of pool even after drying in the sun. Why?

The smell comes from Pseudomonas bacteria settled deep in the fibre. The sun kills surface bacteria but does not reach the deeper layers. Solution: soak the swimwear for 30 minutes in cold water with 1 tablespoon of baking soda, rinse thoroughly and dry in shade. Repeat the baking soda treatment 2–3 times if the smell is strong.

I forgot wet swimwear in the car in summer. Can it still be saved?

Take it out immediately, soak it for 1 hour in cold water with 2 tablespoons of white vinegar, rinse and dry in partial shade. This kills most Pseudomonas. If there are already visible black spots (mould), the swimwear probably cannot be saved — vinegar disinfection works only at initial contamination.

Should I wash the swimwear or just rinse it with fresh water?

After every bathing just rinse with lukewarm fresh water. Washing (hand wash, mild detergent) makes sense after 3–5 uses, or after particularly dirty water (algal sea, lake, river). Speedo emphasises: "use a mild detergent for fine fabrics", never bleach, never fabric softener — both damage the fibre and the DWR coating.

What makes designer swim shorts a luxury item?

Designer swim shorts qualify as a luxury item when they combine four measurable characteristics: premium Hi-Tech polyester engineered for 3–5 seasons of chlorine, salt water and UV resistance; anatomical construction with a shaped basket, contour seams and reinforced waistband for support without compromise; small-batch European production with quality control at every step; and durable design features such as printed (not embroidered) signature logos, metal drawstring ends with the brand mark, and antimicrobial fabric treatment. The Roberto LUCCA brand, in the prestigious French Edgard ranking among the world Top 10 mens swimwear brands for the third consecutive year, exemplifies these standards. A real luxury piece is recognised not at the moment of purchase but after 50 wears, when the shape, colour and feel remain comparable to the first day.

How do I know my swimwear is past its prime due to poor drying?

Three signs simultaneously: the waistband does not return to original shape after 5 seconds of stretching (loss of elastic memory), the colour is dull and patchy especially at the lining, the fabric "crumples" under pressure like paper (fibre damage), and the smell persists after washing. These physical and chemical signs were detailed in our article on why swimwear loses its shape. Any of the signs means it is time for a new pair.

Is drying different in winter than in summer?

Yes, slower. At 18–20 °C indoor temperature without airflow, count on 5–8 hours of drying (vs. 2–3 in summer). Solution: window ajar in the bathroom or hallway, never the radiator. For winter swimmers it is worth keeping 2 pairs and rotating — the memory yarn rotation principle.

Where can I buy quality mens swimwear suited to proper care?

On Dessue.com you will find Roberto LUCCA mens swimwear made of Hi-Tech materials with chlorine, salt water and UV resistance, including a wide selection of swim shorts and brief swimwear. Delivery worldwide.