Hot Sale 😍 Mountain Biking Rockrider ST500, Mountain Bike Undershorts, Men’s 💯

With its thick pad and breathable fabric, the ergonomic foam pad on these men’s undershorts absorbs vibrations and prevents chafing and irritation.

These eco-designed, comfortable mountain biking undershorts have been designed for rides lasting up to 4 hours.

Undershorts support.

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.

A 2nd skin with comfort to boot.

The pad has been designed for more regular users looking to progress in MTB. The support foam is also soft but more dense. It protects pressure zones for up to 4 hours. The foam is soft and the stretchy outer layer hugs the cyclist’s body so the pad can follow their movements.

Foam thickness: 13 mm
Foam density: 220.5 lbs/m³
Foam firmness: 25 KPa

Shorts, undershorts.

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.

Care instructions

You can find detailed info on looking after your mountain bike clothing on our website

Product tests

Our team of product designers based at the B’Twin Village in Lille is continuously working to make cycling more comfortable for our users.
Our obsession is to create products that meet the specific cycling needs of our users and eliminate things that get in the way of their rides.

Determining the environmental impact of our products

A product’s environmental impact is calculated for its entire lifecycle using various indicators.
An overall rating (ABCDE) is given, allowing you to easily identify products with the best environmental performance by comparing similar products to each other (T-shirts, pants, backpacks etc.).

Decathlon openly displays the environmental ratings of its products.
To find out more: http://sustainability.decathlon.com/