Product Colors and Sizes
- Black Friday product
- New Deal product
- Cyber Monday product
- Sale product
- Best Seller product
- Ecodesign product
- New product
- Staff Pick product
- In The News product
- Innovation product
- product
- Black Friday product
- New Deal product
- Cyber Monday product
- Sale product
- Best Seller product
- Ecodesign product
- New product
- Staff Pick product
- In The News product
- Innovation product
- product
MTB Jersey Short-Sleeved ST 500
This ST 500 MTB jersey is comfortable, durable, and breathable. The pockets at the bottom of the back allow you to keep all the items you need close at hand: cereal bars, smartphone, etc.
Free returns
Free shipping over $35
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Features

Moisture wicking
Resistance to wear and tear, plus silicone patches on the arms.
Abrasion resistant
Ventilated fabric and 2/3 zipper on the chest provide good ventilation options.
Pockets
5 pockets let you cycle with everything in reach.
Freedom of movement
Its cut and stretch fabric adapt to your sitting position when mountain biking.
Easy to use
Easily use the pockets, and zip with a single hand as you ride!
Product Lifestyle Image Gallery
Image Gallery







Product Customer Reviews

Great for cycling in warm weather
Size good Good quality
If your on the slightly larger size this is ideal - few pounds of extra weight over lockdown and fits ideally. Definitely worth the money
Comes up very small Order at least a size or 2 larger
Does have pocket for phone But not to big for a modern day smart phone Apart from that very good top I've purchased another since Red/black top
Love the Material and Fit but not sure of the point of any of the pockets. On the left side I can barely get my fingers in nevermind a cereal bar, on the right side my keys won't fit in the designated key pocket (they only just fit in the designated phone pocket), my phone won't fit in the designated phone pocket, and the largest pocket is a half pocket that as soon as you turn your body or bend over whatever is in the pocket falls out. It's such a shame the pockets are infuriating as the material and fit are excellent
Great value for money
Great item highly recommended
Great value jersey. Lots of useful pockets
Nice fit, would have given it another star but pockets a bit small
Despite a very cool look, this jersey was a complete wast of money, due to the not only pointless, but often detrimental features: the waterproof pocket for the phone is lined in plastic, not breathable at all, so in the warm days (this is a summer jersey) , I ended up with a sweaty and unpleasant patch on my back, and the phone inside protected in the remote case of the rain (not very common in summer, is it?) but very damp from sweat and my perspiration.So not only useless, but annoying because the plastic patch is still there even if I no longer put the phone there. On the other side there are 3 super-tiny pockets, useful only if you have 3 of those energy gels. In any other case, if like me you use the jersey to go to work or occasional rides, they are completely useless. The key pocket would just about fit 1 key, but not with key-ring. Shame because I really like the look of it, the colours etc...but after using it for a couple of weeks in warm weather I decided this was the opposite of what I needed for summer cycles to work: a very bad purchase.
The pocket for the phone needs to be watertight from the outside to protect the hone from mud splashes when riding. Indeed, the downside is the act that it attracts perspiration. But it is the lesser of two evils when riding and unfortunately is a trade off. If the phone was in a waterproof pouch, it too would create a perspiration patch on you back. The road version of this jersey has larger pockets as roadies carry more items with them and may be more suitable for your daily commute. Many MTB'ers use a backpack or more recently a bum bag seem to be growing in popularity.
Regards,
Peter, Cycling Manager, DECATHLON
This really does keep you cool in hot weather. Sits comfortably on long rides and has loads of movement. The long zip is appreciated, as is the silicone strips on the arms (and they really do protect against brambles). At £20, you can't go wrong. As with most Decathlon clothes, you'll want to go a size up or two (unless you're a 20-something gym bunny). Being XL and preferring a loose fit, I found 3XL a better fit than 2XL.
Really impressed with the cut and quality of the jersey. Very comfortable and light to wear. The only snag for me is the pocket positioning tends to make gels/bars fall out of the pockets, but I am riding a road bike so my position is different than MTB. Other than that I am very pleased with it so far.
Very nice jersy i wear it during most cycling activites including riding for uber eats. I wish it also had a long sleeve version and the rear pockets are removed/changed so they dont dig into your back.
None
Size Guide

Additional Product Information
Composition
Main fabric
- 22% Spandex
- 78% Polyester cationic
Back fabric
- 100% Polyester cationic
Main lining
- 29% Polyurethane
- 71% Polyester cationic
Why pockets?
The new pocket system on your jersey allows you to carry everything you need as you ride... and get to it easily: - On the back right-hand side: 1 secure water-repellent pocket for your smartphone, accessible with one hand even with gloves on! - At the bottom of the back: 1 secure zip pocket for your keys, ID card, etc. - 3 small side pockets for your cereal bars. - 1 multipurpose pocket: inner tube or empty packaging!
The cut
To help you ventilate and wick away perspiration quickly, your jersey has very well-ventilated fabric on the entire back, where you sweat the most. On the front, the easy-to-use zipper means you can open and close your jersey with one hand. The tab at the bottom of the back goes down to your shorts even while you're bent over the handlebars. What about the pockets? These are located in places that aren't exposed when you fall!
Resistant to brush?
So you can hit the trails without worrying about branches and leaves, our design team chose a special tight-woven, run-proof fabric. The result? A real mountain biking jersey that withstands snags when riding through brush, as well as friction from the straps on your hydration backpack. What's more, the weave is ventilated to provide good breathability!
Tip from our team
When mountain biking, remember to take cereal bars or energy gel. As for how much, that depends on the length of your ride and how hard you ride. You can carry up to 3 bars in your jersey. You can also carry your mobile phone in the pocket, accessible with one hand so you can easily check your route or take photos. Handy!
Advice from our product manager
Since your jersey has so many handy pockets, Daniele, our product manager, has some tips to help you fill them! "When MTBing, remember to take cereal bars or energy gel. As for how much, that depends on the length of your ride and how hard it is. You can carry up to 3 bars in your jersey. You can also carry your mobile phone in the pocket that can be accessed with a single hand to check your route or take photos. It's very practical!"
Origin
Imported
Product testing
Our engineers always have real riders test all our products in real conditions. These tests round out our lab tests and let us validate all our products before they hit store shelves.
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
-
State-of-the-art production processes
minimize manufacturing costs
-
Optimized supply chain
reduces retail prices
-
Minimal retail footprint
lowers overhead and indirect costs

MTB Jersey Short-Sleeved ST 500
Your location: City, ST
Please enter a valid city with state or zipcode. Example: San Francisco, CA or 94101
Order online for
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.