Product Colors and Sizes

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Sale product
  • Best Seller product
  • Eco-Friendly product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product

Men's Jammer Swim Shorts 900

Sale price: $10.00 Regular price:

Jammer-style swimsuit made from polyester, a material with excellent resistance to chlorine. Ideal for intensive swimming in a pool or outdoors.

Color: Select a color
Size: Select a size
Size Guide
Sale price: $10.00 Regular price:

Free returns

Free shipping over $35

Free pickup

San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8402338

Product Features

A photo of the Men's Jammer Swim Shorts 900 in use

Men's Jammer Swim Shorts 900 | For expert swimmers looking for performance, hydrodynamics and muscle support.

Jammer-style swimsuit made from polyester, a material with excellent resistance to chlorine. Ideal for intensive swimming in a pool or outdoors.

Chlorine resistant

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

Freedom of movement

The material’s elasticity guarantees good freedom of movement.

Muscle support

Very good muscle compression at the quads and glutes.


Easily adjustable fitting around waist thanks to the drawstring.


Increased buoyancy thanks to the tight material with greater coverage + stretch

Product Customer Reviews

Skip to reviews
2962 Reviews
Write a Review 

Men's Jammer Swim Shorts 900,neon lime
Filtered by reviews Loading reviews…
Happy with the buy

Good quality product

icon-circle-checkmark verified purchase

Good price, good Quality but wish this more choices with good prices!

icon-circle-checkmark verified purchase
Its excellent product and fair price as well

Its excellent product and great value

icon-circle-checkmark verified purchase

Comfortable ,fit perfectly , quick dry

icon-circle-checkmark verified purchase
Fit for purpose

Product does what it is supposed to

icon-circle-checkmark verified purchase
Size misleading

The size on the label was in no indicative of the actual size. No size chart visiable

icon-circle-checkmark verified purchase
mens swimming jammers

fits well, looks well made, time will tell how long it lasts with chlorine exposure

icon-circle-checkmark verified purchase
Great swimmers!

Excellent construction, materials are great and the finishing is great.. no loose threads or puckered up stitching.

icon-circle-checkmark verified purchase


icon-circle-checkmark verified purchase

Hi Maria

Thank you for your review and we are glad to hear that you are delighted with the product! We take feedbacks and reviews into consideration as we strive to make better products for all sports users out there!

This product is meant for intermediate users who seeks comfort while swimming as it allows you to swim without difficulty :)

Feel free to view our website for more products or drop by to our nearest Decathlon store to you to check out more sports products catered for sports users!

Muhammad Fakhrul

Omni-Channel Sports Advisor

Decathlon Singapore

Does the job

Sizing is very good, you'll find one that fits well without pinching. Otherwise, just your basic jammers. I liked the first pair so much, I went to buy a second one. I'm satisfied, but colors are boring. Colors helps your family to recognize you at practice or competition. Only black and blue, black and orange. boring.

Not best of quality

These are true to size, and comfy to wear. However, having only been worn and washed three times, the material is already ‘bobbling’

icon-circle-checkmark verified purchase
Nice shorts


icon-circle-checkmark verified purchase

Great for swimming in

icon-circle-checkmark verified purchase
Value for money

Excellent product, well worth the money. Just as good as products twice the price

icon-circle-checkmark verified purchase
Sizing is wrong

This is the third time that I have to go and send back jammers at Decathlon. I have no idea how you do your sizing but definitely the swimwear and most clothes are way to small. I have bought swimming jammers for my 13 year old son who is a normal 13yo. The 14-15 children's doesn't fit him, so I got this men's swimming jammer, size M as the size S look smaller that the kids one. Well, the jammers are very tight specially in the legs. They are not size M at all! They won't fit a grown up man. This problem in sizing goes across most of your products. I was a big fan of Decathlon but not anymore. Waste of time!

Skip to reviews

Size Guide

Size Guide Visual

Additional Product Information


Main fabric

  • 100% Polyester cationic


  • 100% Polyamide


JAMMERS – length 17.3'' First and foremost, a swimsuit should be comfortable. It should enable you to move with ease. That's why it is important to choose the cut of your swimwear carefully. The jammers provide great muscle compression for the quads and glutes, resulting in the perfect fit.


100% polyester Our engineers have developed a polyester-based textile and replaced the spandex fibers with PBT fibers. These give it sufficient elasticity to ensure user comfort while protecting it against the damaging effects of chlorine. This PBT thread - is quick-drying. - only loses 3 to 4% resistance throughout its lifespan. - UV-resistant: even the brightest colors will retain their colorfastness.

Aquaresist technology

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


Swimwear intended for regular intensive use.

Score to compare the environmental impact of products

The environmental impact of the product is calculated with different indicators over its entire lifecycle. An overall score (ABCDE) is attributed to help you easily identify the products with the best environmental performance. Use the score to compare products of the same type with one another (T-shirts, pants, backpacks, etc.). Decathlon chose to apply this environmental labeling system. Explanatory video:



Product testing

The products labeled with AQUARESIST certification are tested under repeated cyclical loading in a pool of chlorinated water for 240 hours. No deterioration of elastic strength was observed throughout the test. Unlike a standard swimming product, this product retains its shape.

Storage instructions

Store the swim shorts in a dry place.

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual