Product Colors and Sizes
- Black Friday product
- New Deal product
- Cyber Monday product
- Clearance product
- Deal 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
- Clearance product
- Deal product
- Best Seller product
- Ecodesign product
- New product
- Staff Pick product
- In The News product
- Innovation product
- product
Rockrider ST500 Mountain Bike Undershorts Men's
Are you looking for a good balance between support and simplicity for your rides? With their thick pad and breathable fabric, these ST 500 mountain biking undershorts keep you comfortable and cool.
Free shipping over $49
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
Seat comfort
Ride comfortably for up to 3 hours thanks to the ergonomic 12 mm foam pad.
Moisture wicking
Stay dry: the airy mesh fabric quickly wicks perspiration.
Stability
More support for more comfort thanks to the elastic band and gel bands.
Compatibility
You just need one: these undershorts are compatible with our men's MTB shorts.
Questions & Answers
There are no questions
Be the first to post a question
Product Customer Reviews
Loading reviews…
A Must product
Excellent product
its decathlon. what else to say.
Good product and value for money.
I bought it for just 199/- during clearance sale... A good product but this time the elastic is getting loose easily than earlier purchase.
Very good for the price you pay
Poor elastic. Useless in a very short period of time when elastic lost it's elasticity
Very good at the price of 199. OK for rides upto 100km
Worth the price
Good product
Excellent and very good products
Serves its purpose well.
Good
Excellent
Elastic and the whole material got loose within 20 cycling hours
Size Guide
Additional Product Information
Composition
Main fabric: 100.0% Polyester ; Padding - Inner fabric: 100.0% Polyester ; Padding - Outer fabric: 80.0% Polyamide, 20.0% Elastane
Are these undershorts supportive? we explain all.
Bibless undershorts can be much more practical. But do you get enough support?To guarantee the support you need, even without straps, we have made a pair of undershorts that hugs your body just like boxers. The elasticated waistband adapts to fit you and stays in place with no adjustment needed.And to stop the shorts riding up as you cycle along, there are gel bands at the bottom to keep your undershorts just above your knee.
A second skin with comfort to boot.
Feeling comfortable in the saddle is a top priority when you're on the go for several hours!For maximum comfort, even when you're hurtling down mountain bike trails, your undershorts have an ergonomic 12 mm foam pad.Besides making the saddle more comfortable, the pad reduces rubbing so you won't get chafed.
Several layers for less heat?
In the middle of summer in particular, you need to get rid of heat quickly.That's why the ST 500 undershorts have a breathable foam pad and mesh fabric, to wick away perspiration quickly.The result is that you don't warm up, even though you're wearing 2 layers of shorts.
How our ideas and your feedback made these undershorts.
We entrusted our mountain biking team with the task of designing bibless undershorts that give you a good balance between simplicity and support.It took 5 people 18 months of studying, designing, prototyping and running lab tests... And we also had your feedback.We traveled to France and Italy to meet up with around 30 intermediate mountain bikers and run a series of functional tests in real situations.The result was a product that's suited to your sport and meets your needs!
Shorts, undershorts, pad? here are our tips!
Undershorts are to MTB what kilts are to Scotland: you wear them against your skin!To avoid chafing, we therefore recommend changing them and washing them as if they were underwear.And when you're riding, your shorts and undershorts should never be attached.Why? Because each has their own role to play:- The undershorts stay in place for comfort and support.- The shorts move with you for better freedom as you cycle along.
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.
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
-
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
Rockrider ST500 Mountain Bike Undershorts Men's
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.
