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Boy’s Swimming First Jammer 500
This boy’s jammer with good thigh coverage is perfect for rising to new challenges in competitive swimming, thanks to its excellent chlorine resistance.
Free shipping over $35
Final Sale: No returns or exchanges
Free returns
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Features

Chlorine resistant
more than 200 hours of use
Stability
Press flat against the skin and allow the swimmer to move without difficulty.
Freedom of movement
Good support thanks to the spandex-free elastic fabric.
Adjustable
Easy to adjust fit around waist thanks to the drawstring.
Product Lifestyle Image Gallery
Image Gallery





Product Customer Reviews

These shorts were a great length and love the design. The price is great too. I did find them a little small fitting, there is not much stretch in them, so I gave them to my nearly 7 year old instead
My son loved these shorts, perfect length and size and has a drawstring. Material has a little give in it too which is great
I have a squad swimmer so his bathers get well, well used. These were a fantastic price, great quality, they look great and he absolutely loves them. Will definately be getting more on my next visit to Decathlon
Great fit and design kids loved them
Ordered a size 12 for my long and skinny 10 year old. Far, far too small. Such a shame. Hope to exchange for a larger size as he really liked them otherwise.
They're ideal for my son for swimming club, but had to get a bigger size as run very small.
Superb quality and fit.
Easy to use and clean. Will recommend to all.
Item worth every penny. Easy to use and clean. Will recommend to all.
These are made from quality material at a very good price. But take note: they come up quite small. I bought age 14 for my 12 year old son, who is not skinny but is slim. They are a bit of a squeeze for him to get on and won’t last him for long.
Great quality product. Just what we were looking for.
Hi Natalie,
Thanks for your review! We are pleased you are happy with the price and quality of our product! Hopefully see you again soon.
Orla
excellent price
excellent value
Very good swim shorts good quality
although they tend to come up small these are great value and have been perfect for the keen swimmer!
Size Guide

Additional Product Information
Composition
Main fabric
- 100% Polyester cationic
Main lining
- 100% Polyamide
Style
JAMMER – 13" long (in size 10 years) The JAMMER is ideal for anyone who wants to surpass themselves. A swimsuit should primarily favor comfort. It should enable you to move with ease. That's why it is important to choose the cut of your swimwear carefully.
Material
Our engineers have developed a Polyester-based textile and replaced the spandex fibers with PBT fibers that give it sufficient elasticity to ensure user comfort while 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. - Even the brightest of colors will retain their colorfastness.
Aquaresist technology
Products bearing the AQUARESIST label are guaranteed to deliver chlorine-resistance throughout their lifespan. They will maintain their elasticity and are UV-resistant. For these reasons, they are recommended for regular or intensive pool use.
Use
Swimwear intended for regular use.
A score to compare the environmental impact of products
The product's environmental impacts are calculated across its entire lifecycle using various indicators. An overall ABCDE rating is performed to help you easily identify the products with the best environmental performance by comparing the same type of products with each other (T-shirts, pants, backpacks). Decathlon is a committed stakeholder in this environmental labeling approach. Website: sustainability.decathlon.com Explanatory video: https://youtu.be/8t63KkRwn_8
Origin
Imported
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 briefs 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
-
Research and development
delivers high-quality cost-effective products
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State-of-the-art production processes
minimize manufacturing costs
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Optimized supply chain
reduces retail prices
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Minimal retail footprint
lowers overhead and indirect costs

Boy’s Swimming First Jammer 500
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Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
