Men's Swimming Trunks 900 - Black White


Our design teams have developed these briefs for the swimmer looking for a classic shape and who needs support.

Men's trunk-style swimwear with the best fabric for excellent chlorine resistance! Perfect for regular swimming in a pool or outdoors.

Size: size guide


Product benefits

Chlorine resistance

more than 200 hours of use: recommended for regular use.


Swim trunks provide good support


Easy to adjust fitting around waist thanks to its drawstring.

Technical information


SWIMMING TRUNKS – side height 7 cm

Swimwear should prioritise comfort. It should enable you to move with ease.
That is why it is important to choose the shape of your swimwear carefully.

The swimming trunks have a classic and timeless cut, providing great support and plenty of freedom of movement.


100% polyester
Our engineers have developed a polyester-based fabric and replaced the elastane fibres with PBT fibres that give it sufficient elasticity to ensure user comfort whilst protecting it against the damaging effects of chlorine.

The benefits of this PBT thread are
- quick-drying.
- only loses 3 to 4% resistance throughout its lifespan.
- resists light damage: even the brightest of colours will retain their colour-fastness.


Products bearing the AQUARESIST label are guaranteed to deliver chlorine resistance throughout their lifespan. They will keep their elasticity and be resistant to light. For these reasons they are recommended for regular or intensive pool use.

Score to compare the environmental impact of products

The environmental impact of the product is calculated over its entire life cycle using different indicators. An ABCDE score is provided to enable easy identification of the most environmentally-friendly products when comparing products of the same type (T-shirts, trousers, backpacks).
Decathlon chose to apply this voluntary environmental labelling scheme.



2 years

Product concept & technology

Product Composition

Main fabric 100% Polyester Lining 100% Polyamide


Store the swim shorts in a dry place.


The products labelled with AQUARESIST certification are tested under repeated cyclical loading in a pool of chlorinated water for more than 200 hours. No deterioration of elastic strength was observed throughout the test. Unlike a standard swimming product, the product remains intact.

Maintenance advice

Machine wash - 30° max - normal

Do not bleach

Do not tumble dry

Do not iron

Do not dry-clean


Men's Swimming Trunks 900 - Black White
Men's Swimming Trunks 900 - Black White
Men's Swimming Trunks 900 - Black White
Men's Swimming Trunks 900 - Black White

Customer reviews


Environmental Impact

The carbon footprint of this product is:
4.09 kg CO2e
1 kg of CO2e represents 5km in a petrol car (according to the Base Carbone© of ADEME)
What's the carbon footprint ? We evaluate the environmental impact of all our products. At all stages of their life cycle: from the extraction of the raw material, passing through transport to the plant which transforms them, the transformation, the manufacture, the transport of the finished product, until its use and end of life. More details on the measurement of the carbon footprint of our products