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Key feature
Neoprene jammer for training in the pool or in the sea that provides good buoyancy at the legs and enables better performance.
Users reviews
4.33 / 5 54 ratings

Products benefits

Chlorine resistance
more than 200 hours of use
A 4mm neoprene product that offers good leg buoyancy.
Thermal insulation
The 4mm 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.
Easy to adjust fitting around waist thanks to its interior drawcord.


Main fabric : 90.0% Rubber - Chloropren (CR) - Neopren, Main fabric : 8.0% Polyamide, Main fabric : 2.0% Elasthane
2 years


Storage Tips
Dry outdoors after washing.


JAMMER – 44cm long The 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 favour comfort. It should enable you to move with ease. That is why it is important to choose the shape of your swimwear carefully.
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

Users reviews

4.33 / 5 54 ratings
50 users recommended this product

At Decathlon, reviews are reliable.

  • 14 March 2019
    Use since 2 to 8 weeks
    That review has been deposited on this product version
    Great Service

    Had to replace jammer shorts due to being too small. Seamless process to return and replace. Also happy with quality of product.

  • Man
    50-59 years old
    04 March 2019
    Use since 2 to 8 weeks
    That review has been deposited on this product version
    Big Thumbs up from me

    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.

  • Man
    18 September 2018
    That review has been deposited on this product version
    Neoprene shorts

    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