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Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's
The ST 100's built-in foam pad is designed especially for men. Unlike classic shorts, these shorts absorb vibrations and prevent rubbing and irritation.
Free shipping over $35
Free returns
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Features
Resistant to wild vegetation
The "warp and weft" fabric withstands rubbing and snags.
Seat comfort
Preformed foam pad. The seams are positioned to prevent chafing.
Freedom of movement
Enjoy the wide cut, stretch fabric, and elasticated waist.
Breathability
With undershorts that effectively wick away perspiration.
Pockets
Take everything you need in the flap pocket on the right thigh.
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Product Customer Reviews
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The listed is EU sizing, so the US size varies. An EU small is an US extra small, an EU medium is an US small.
Very Happy
They are very reasonably priced but they are average quality and they fit and sit poorly. I would recommend spending more on there next rang up
Hi Matthew,
Thanks for taking the time to review our ST100 MTB short. These shorts are designed for your first mountain bike rides when you're not yet ready to drop a bomb on gear. If you are, like yourself, spending more hours on the trails I would also recommend going up to the ST500 model. These are designed for longer rides up to two hours and will still provide good freedom of movement whist having a more tapered fit.
If you do try these out we'd love to hear back from you and know what you think!
Sportingly,
Tamara
Great quality and so soft. Great fitting. Easy to wash in washing machine.
Without doubt, the best value MTB shorts on the market
It’s better off spending more money for good brand .
Hi Mal,
Thank you for taking the time to review our ST100 MTB short. I'm sorry to hear that you are not satisfied with this short. I would love to learn more about your feedback on the short to pass on to our design team in France. The team at B'Twin Village in Lille are continuously working to make cycling more comfortable for our users and would be glad for any feedback.
Thanks again Mal.
Sportingly,
Tamara
Waist tie chord too short. Padded inner not that comfortable. Only one pocket.
Great shorts for riding any kind of bike, without the lycra look. Very comfortable and hard wearing.
Very good value for the cost. But the waistline tie lace is too short and needs to be longer!
Shorts are comfortable and fit well, only issue is that the padding is to thin.
Reasonable price and good quality
Purchased this product to use mountain biking...comfortable and functional at a great price. Recommend
Cheaply made. After tying the waist it ripped the elastic waste band. The shorts don’t ride well. Will be returning them
I wasn't expecting much from these but they are as comfortable as shorts that cost double, highly recommended.
Keeping the butt cushy 10/10
Hello Andrew,
Thank you for taking the time to leave a review.
We are happy to hear that this short is doing its job 😉
See you again soon!
Decathlon Calgary Team
Size Guide
Additional Product Information
Composition
Main fabric
- 100% Polyester cationic
Inner fabric
- 84% Polyester cationic
- 16% Spandex
Padding
- 56% Polyester cationic
- 40% Polyurethane
- 4% Cotton
Cycling shorts, the mountain bike rider's kilt
Don't forget: you wear cycling shorts without underwear. Why? Wearing underwear risks causing irritation. Your skin can rub against the seams and elastic of your underwear. Chafing, shearing, all combined with perspiration (heat + humidity)... this is quite the recipe for infections. That is why we design our shorts with anti-bacterial pads. Dare to wear shorts without underwear!
Our care tips
Machine wash inside out on a synthetics cycle at 86°F. Do not use too much detergent, and do not use fabric softener. It is best dried on a hanger in a warm, well-ventilated place.
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
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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
Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's
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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.