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Jammer Swimsuit 4 mm Glideskin 500 Neoprene
Neoprene jammer for training in the pool or in the sea that provides good buoyancy at the legs and enables better performance.
Free shipping over $49
Free returns
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Videos
Product Features

Chlorine resistant
more than 200 hours of use
Buoyancy
A 4 mm neoprene product that offers good leg buoyancy.
Thermal insulation
The 4 mm neoprene keeps the buttocks and thighs warm in temperate water.
Freedom of movement
The elastic neoprene is easy to put on and allows for easy movement.
Adjustable
Easy to adjust fit around waist thanks to the drawstring.
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Product Customer Reviews

Great product and excellent performance
Ordered Wednesday delivered Friday Morning via Standard Delivery which is outstanding, so much so i wore them for my hour long regular lunch time swim, these are an exceptional product i usually take 30 seconds for 25 metres, today it took me with these buoyancy shorts 23 seconds, i shaved 7 seconds straight away at a leisurely pace. I was always a slow and tired swimmer after an hour long session not today i was hardly breathing and could of done another hour. They have stopped the drag and resistance straight away. They are easy to get on and off, as i rolled the legs and they were even easier, because they taper up the leg the rolling up makes them wider, same with taking them off, i turned the legs again like a turn up, rolling means you can get them right under your crotch. I hung them out to dry this afternoon and they were stone dry after an hours drying, very,very impressed i even ordered another pair.
Suffering from sinking legs and trying all the suggested cures, I looked for a solution, as swimming crawl was making my lower back sore. These are excellent for making the lower body and legs more buoyant. So I can swim with a better technique and also am enjoying my swimming more. Decathlon products I've found to be very reasonably priced. I thought were expensive for what they are simple small pattern of neoprene, however, they do work so glad I bought them. Size-wise I am a 35" waist and bought a 46 which fit snugly and well. A good buy for me. I'd recommend.
Hi I recently purchased these after researching them. I have been swimming 3 times a week and was using a swim byod. These shorts now enable me to have more confidence kicking and becoming a better swimmer. I personally have had no issues with regards to size I ordered the size according to the guide and they fit fine. Highly recommend this product
I bought these shorts to aid my sinking back end when trying to swim front crawl. Brilliant! They where just what the doctor ordered, fit comfort, bouyancy, made swimming so much easier. However after only 4 times in the pool I noticed small splits in the Neoprene. Because I could not speak with any one on the phone, I sent an email with a picture of the damage to Decathlon asking if it was possible to send a replacement item, pre return of damaged goods. Automated reply! telling me my options to return which I had already read on the web site! I am now looking to procure from another site and return these as and when I procure a replacement item! Very frustrated customer!
These shorts are great if you want to replicate the feeling and buoyancy of swimming in a wetsuit whilst training in the pool. I have already recommended them to people. Just be sure to get your sizing right, I’d say if in doubt go a size up
Excellent swim jammers. Lift hips and keep cold out. Really good quality
Bought these not really sure what to expect and in fairness they fit well and offer a degree of buoyancy which makes training more productive. The only criticism is the pull up tags were very poorly attached and came off straight away which makes pulling up more difficult and a training session in itself I’m a little uncertain about recommending from manufacture quality but to wear they are very good when on
Wanted to try these for awhile to reduce the amount of swimming I do using a pull buoy. Great product and definitely helping with the swimming.
GREAT EXPERIENCE WITH CUSTOMER SERVICES, AFTER A QUICK CONSULTATION I WAS ADVISED TO ORDER THE NEXT SIZE UP TO MY USUAL SIZE. GREAT PRODUCT FITTING IS PERFECT. DELIVERY VERY FAST. VERY PLEASED OVERALL.
Had to replace jammer shorts due to being too small. Seamless process to return and replace. Also happy with quality of product.
As an older swimmer, keeping my core/belly level is important. Loads of the other swimmers in the tri club have started wearing buoyancy shorts costing over twice as much as these but i.m tight, so went for the cheapest option I could find and i'm so glad I did....These do a great job and the quality is spot on, really do the job they're supposed to and comfy as well. I,m a 32" waist and that's what I bought, they're a snug fit, don't go for a size smaller as you'd find them too snug.
Bought these jammers a couple of weeks ago from the Gateshead store ,the sales assistant was brilliant helping me find them in store.i tried on a size 30 inch waist as thats my measurement waist wise,they were very tight,opted for the 34" which fitted well and provided flexibility when moving .im in the process of improving my frint crawl to do longer triathalons and needed to have a more streamlined approach in the water i found the product brilluant as the boyancy lifted my backside ut toward the water surface and enabled me to kick with ease and not have to worry about sinking .i think there excellent but try on first for best fit
I ordered these in a 32" which I presume referred to waist measurement - they are a men's garment so as a size 10-12 lady I presumed they would be amply big enough, they were so tiny that I couldn't pull them up over the tops of my legs, and I'm tall and slim.
Thank you for your recent feedback. We are sorry to hear that you found the neoprene jammers way too small. This model is not as flexible as the standard swimming jammers due to different component. We suggest to try the next size up. Please return you current item to local store or use the online procedure for full refund or exchange.
Once again apologies for any inconvenience caused.
Kind regards,
KORNEL
I have been using a pull buoy training for triathlons but was not comfortable swimming with it. My coach suggested trying these neoprene jammers so I bought these. What an improvement - would highly recommend them ....
Additional Product Information
Composition
Main fabric: 90.0% Rubber - Chloroprene - Neoprene, 8.0% Polyamide, 2.0% Spandex
Style
JAMMER – 17.3” longThe NEOPRENE JAMMER is perfect for swimmers who want to stay in the water for longer without tiring their lower limbs, and while improving the buoyancy of their buttocks and thighs. 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: aquathermic technology:
AQUATHERMIC components integrate thermal features to reduce thermal shock when entering the water, and also reduces the duration and intensity of the wind chill effect* when getting out of the water. It also improves thermal insulation between your body and the outdoors to enable you to swim longer in cold conditions
Storage instructions
Dry outdoors after washing.
Origin
Imported
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
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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

Jammer Swimsuit 4 mm Glideskin 500 Neoprene
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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.
