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Rockrider, 3/4 Mid-Length XC Mountain Bike Bib Shorts, Men's

Sale price: $49.99 Regular price:

We have designed these XC bottoms for your demanding workouts, with optimal freedom of movement and the water repellency you expect

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Sale price: $49.99 Regular price:

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8500172

Product Features

A photo of the Rockrider, 3/4 Mid-Length XC Mountain Bike Bib Shorts, Men's in use

Rockrider, 3/4 Mid-Length XC Mountain Bike Bib Shorts, Men's | Our team of XC mountain biking enthusiasts designed these bib cropped bottoms to provide warmth during cool weather mid-season rides.

We have designed these XC bottoms for your demanding workouts, with optimal freedom of movement and the water repellency you expect


The main fabric is brushed knit: perfect for providing warmth.

Moisture wicking

The mesh at the back is a fabric known for absorbing moisture.

Water repellent

Drizzle and light splashes of mud will not reach your skin.

Freedom of movement

its straps and cut have been specifically designed for Cross Country

Seat comfort

For long rides, the pad is ergonomic with 3 densities and a gel insert

Product Lifestyle Image Gallery

Image Gallery

Rockrider,  3/4 Mid-Length XC Mountain Bike Bib Shorts, Men's,black 

Rockrider,  3/4 Mid-Length XC Mountain Bike Bib Shorts, Men's,black 

Rockrider,  3/4 Mid-Length XC Mountain Bike Bib Shorts, Men's,black

Product Customer Reviews

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Rockrider,  3/4 Mid-Length XC Mountain Bike Bib Shorts, Men's,black
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Size way off

Followed the size guide. Add a few more cm just in case. It didn't pass my knees. Size M is like an XS. How is this even possible?

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Excellent at the price

As per other reviews a snug fit but better that than them getting baggy after a few rides. Nice and warm, not bothered whether they are water repellent or not. The leg grippers are very good, flat laser cut style edges rather than folded and stitched. Wish they did a road branded version or one with neither discipline branding. Comfortable pad. I have had many pairs of BTwin/Decathlon shorts and they are all excellent.

Nearly there

Elasticated cuffs didn’t grip as well as could be expected. Does provide the best gel pad for this range. Although for colder weather I was fine using this in up to 40 degree heat. The thickness of the material does mean there is less give in terms of stretch and I did feel at times I was potentially stretching it beyond its limit when trying to get a snug fit.

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Like a sponge.

I have just used these for the first time and the fit suits me, although I agree that sizing up is a good idea. I went out in light drizzle and there is no element of water repellency to them. In fact I watched the fabric on the thigh (probably the most important area) soak up the water droplets like a sponge. I was wearing a cheap water resistant top from another manufacturer and the rain beaded on the surface. As the key reason for choosing these was the water repellency, I am very disappointed.

Thank you for taking the time to post a review of these 3/4 bib shorts. The fabric has a degree of water repellency but how much, I'm unsure but it seems to suggest light splashes and some light drizzle.
I will ask the Rockrider team for clarification on the matter.
If you are not happy with the item and they don't live up to your expectations, please return them to us for a refund or an exchange with your receipt.
Peter, Cycling Manager, DECATHLON
Excellente but a little small

These are fantastic, they are very very small for sizing so really do size up. But otherwise they look and work great. Fantastic value.

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Size up

Weird sizing issue with these, I wear size M in the 500 and Van Rysel range of bib shorts so bought size M in these and very nearly did not manage to get them on so you may want to size up on these. That said after struggling to get them on they were actually a good fit and nice and comfortable too. I bought these in late uk "summer" and they were too warm for that, I suspect they will be perfect for now and the coming weeks as the temperates begin to drop. I would definitely buy these again.



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Superb Product

Lovely out fit

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Amazing fit

Amazing fit and very comfortable

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Cyklo oblečení

Dobře sedí na těle

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Neni co dodat

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3/4 nakolo

Super 3/4 kalhoty, příjemný materiál, dobrý střih, naprostá spokojenost.

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Cyklo kalhoty

Velikost sedí, jsou pohodlné.

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Kvalitní a příjemný materiál

Super do podzimu, velmi příjemné na tělo, kvalitní švy. Snad mi kalhoty vydrží na dlouho.

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Kalhoty vypadají moc pěkně, možná ale velikostně nesouhlasí. Potřeboval bych o 1 číslo větší. Jezdím převážně v terénu a po první jízdě se mi objevila dírky. Nevím co z ní. Dál se nezvětšuje, ale i tak je to nepříjemné

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Size Guide

Size Guide Visual

Additional Product Information


Main fabric

  • 91% Polyester cationic
  • 9% Spandex


  • 54% Polyester cationic
  • 46% Polybutylene terephtalate

Padding - Inner fabric

  • 100% Polyamide

Padding - Outer fabric

  • 77% Polyester cationic
  • 23% Spandex

Product warmth

A product's ability to protect from the cold. It depends on the material's thermal resistance and how much air can pass through it. The higher its thermal resistance, the more the product retains the heat produced by the body while cycling.

Care tips

Machine wash at 86°F. Synthetics cycle. Turn the article inside out. Do not use fabric softener. Line-dry in a warm, ventilated area. Do not tumble dry. Do not dry-clean. Do not bleach. Do not place on a heater to dry.

A rating to compare products' environmental impact

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:



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For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

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    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual