Product Colors and Sizes
ROCKRIDER
Men's Mountain Bike Undershorts EXPL 500 - Black
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These comfortable mountain biking undershorts have been designed for rides lasting up to 4 hours.
With its thick pad and breathable fabric, the ergonomic foam pad on these men's undershorts absorbs vibrations and prevents chafing and irritation.
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Product Features
Sitting comfort
Ride comfortably for up to 3 hours with the ergonomic foam pad (13 mm).
Moisture management
Actively wicks away perspiration to the outer surface for quick drying
Stability
Fitted cut without compression, very elasticated waistband
Stretch
Elastane in the fabric to guarantee ease of movement.
Praline Flavour
You just need one: these undershorts are compatible with our men's MTB shorts
Lightweight
170 g in size L.
Additional Product informations
Composition
Do not wash.
- 13% Milled Fennel
- 87% Polyester
Hand wash. Maximum temperature of 40°C.
- 100% Cellulose - Sustainable Wood Fiber
Any type of dry cleaning allowed.
- 14% Milled Fennel
- 86% Polyester
Any type of drying allowed.
- 100% Polyethylene
In a nutshell
Pad thickness: 13 mmPad density: 100 kg/m3Pad firmness: 25 KPa
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 second 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 3 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 mmFoam density: 100 KG/m3Foam 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 hindrances to a good cycling experience.
Product Reviews
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Sizing is a bit weird. I went for a size larger than I normally have and that seems to fit ok. They are very comfortable though and have good padding. Cheap too, what’s not to love except the bonkers sizing.
I recently bought 2 pairs of these to replace my old MT500 undershorts that are excellent, especially for the cost, and fit extremely well, but worn out now after years of use. Likewise, I have an old and new pair of the MT900 undershorts - and it is the same issue with crazy tight legs.bottom sizing (cannot get them on) but waist stated way larger . As the issue on the latest MT500 and MT900 is the same, below I paste the issue from the MT900 as its the same. As others have said, the latest (2021) version of these are sized/cut for a stick insect. Dont buy without trying on in store. Likely uou will need to size 2 times up and take the waist in. Decathlon, PLEASE fix the weird 'large waist/ultra skinny legs' fit - its mad! I have a 32" Waist, and like the pair of these I got years ago bought Large, which used to be for 82-89cm and fitted well 32-34" with a slim athletic legs/hips. The latest version Large MT500 now state on the label they are for 98-104cm (38-41")!! However, despite the claimed size being way bigger than my waist, I could barely get these on my thighs/bottom, they are so tight around the thighs and bottom, my legs started throbbing! And I have a slim athletic shape legs/bum - not a 'Chris Hoy' figure. Friends keep telling my I need to eat more and put on weight, so its not my shape, but the new cut of the shorts. The waist might just at a push stretch to 41" - but there is no way anyone with that waist would get them above their knees. The shorts themselves (my last pair) are excellent especially for the price, brilliant - the pad is fabulous, comfy, light. Such a shame they have totally ruined the cut. I am going to have to try an XL (for my slim build & 32" waist!) in store and hope I can then take the waistband in - as they are otherwise great value undershorts. Maybe these were a mis-manufactured batch - however I also have the excellent MT900 undershorts - and also an old pair - and its exactly the same issue. You would need absolutely pipe cleaner legs, no bottom and a huge waist for the cut to have the correct snug but comfy fit.
Excellent produit
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