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Home / Men's Swimwear / Decathlon Men's Swim Trunks, Youth and Adult Professional Racing Swimsuit with Chlorine Shield WWK1

Attributes

Brand -
Category Sports, Yoga, Fitness & Fan Gear / Men's Swimwear
Origin -
Brand Decathlon
Model WWK1
Material Composition 82% Polyester, 18% Elastane
Special Feature Chlorine Shield Technology
Intended Use Professional Racing and Training
Fit Type Compression Fit
Waist Closure Elastic Drawstring
Care Instructions Machine wash cold, do not tumble dry
Available Sizes Youth S-XL, Adult S-XXL
Color Options Navy Blue, Black, Red

6 reviews

A

Anonymous

Mar 30, 2026

Rating: 5/5

Durable and fast drying

These dry almost instantly after a shower. The material feels high quality and doesn't absorb too much water, making turns in the pool much easier.

A

Anonymous

Mar 26, 2026

Rating: 4/5

Solid training suit

Good compression without being restrictive. The drawstring stays tied which is a nice touch. Would be perfect if they offered more color variations.

A

Anonymous

Mar 26, 2026

Rating: 5/5

Perfect for daily lap swimming

I swim five days a week and these trunks have held up incredibly well. The chlorine shield really seems to work as the fabric hasn't faded or stretched out after three months of heavy use.

A

Anonymous

Mar 25, 2026

Rating: 5/5

Recommended for my swim team

Bought a batch for our youth team. They love the comfort and I love the price point. They withstand the harsh pool chemicals better than other brands we have tried.

A

Anonymous

Mar 13, 2026

Rating: 5/5

Best swim trunks I've owned

The Chlorine Shield technology is no joke. My old suits would get baggy after a few weeks, but these still fit like new. Highly recommend for serious swimmers.

A

Anonymous

Mar 02, 2026

Rating: 4/5

Great value for competitive swimmers

Very comfortable and hydrodynamic. The fit is snug which is exactly what I need for racing. Only giving four stars because the sizing runs slightly small, so order one size up.

5 FAQ

Q: Is the drawstring adjustable while in the water?

A: Yes, the drawstring is designed to stay secure during vigorous activity, but it can be adjusted if needed. Most users find the initial fit sufficient without needing adjustment mid-swim.

Q: How does the sizing compare to standard US sizes?

A: Our WWK1 model tends to run slightly smaller to ensure a competitive compression fit. We recommend checking our size chart and considering sizing up if you prefer a looser fit.

Q: What is the expected lifespan with daily use?

A: With daily chlorinated pool use, most customers report 6 to 9 months of optimal performance before noticing significant wear, which is above average for this category.

Q: Are these suitable for open water swimming or just pools?

A: While designed primarily for pool training with Chlorine Shield, many customers use them for open water swimming as well. Just rinse thoroughly with fresh water after saltwater use.

Q: Can these be machine dried?

A: No, we strongly advise against tumble drying. High heat can damage the elastane fibers and reduce the lifespan of the Chlorine Shield coating. Please air dry only.

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