Product Colors and Sizes

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Sale product
  • Best Seller product
  • Eco-Friendly product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product

Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's

Sale price: $19.99 Regular price:

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.

Color: Select a color
Size: Select a size
Size Guide
Sale price: $19.99 Regular price:

Free returns

Free shipping over $35

Free pickup

San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8381864

Product Features

A photo of the Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's in use

Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's | These mountain biking shorts are resistant to vegetation and are designed for your first mountain bike rides.

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.

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.

Product Lifestyle Image Gallery

Image Gallery







Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's,black 





Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's,black 





Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's,black 





Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's,black 





Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's,black 





Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's,black 





Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's,black 





Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's,black 





Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's,black 





Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's,black 





Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's,black

Product Customer Reviews

Skip to reviews
1737 Reviews
Write a Review 





Rockrider ST100, Moisture-Wicking Mountain Bike Shorts, Men's,black
Filtered by reviews Loading reviews…
Re: Sizing

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.

Bike shorts

Waist tie chord too short. Padded inner not that comfortable. Only one pocket.

icon-circle-checkmark verified purchase
Excellent value

Great shorts for riding any kind of bike, without the lycra look. Very comfortable and hard wearing.

icon-circle-checkmark verified purchase
Very good value for the money. The tie-lace for th

Very good value for the cost. But the waistline tie lace is too short and needs to be longer!

icon-circle-checkmark verified purchase
Not enough padding

Shorts are comfortable and fit well, only issue is that the padding is to thin.

icon-circle-checkmark verified purchase
Reasonable price and good quality

Reasonable price and good quality

icon-circle-checkmark verified purchase
Excellent Product...Great Price

Purchased this product to use mountain biking...comfortable and functional at a great price. Recommend

icon-circle-checkmark verified purchase
You get what you pay for

Cheaply made. After tying the waist it ripped the elastic waste band. The shorts don’t ride well. Will be returning them

icon-circle-checkmark verified purchase
Surprisingly good.

I wasn't expecting much from these but they are as comfortable as shorts that cost double, highly recommended.

icon-circle-checkmark verified purchase
No stretch.

Pretty good for the price, but they're quite snug and there's no stretch as advertised so they're a little restrictive.

Great value

Love these bike shorts, but heard the product might be discontinued

icon-circle-checkmark verified purchase
Good for the price but watch sizing

I normally take a medium, but had to go to Extra Large. The large was still a bit tight, and the Extra large is a little big, but thankfully it has a drawstring. But for $25 they are great.

icon-circle-checkmark verified purchase
Great shorts, fit wonderfully

I was reading the other comments from India, UK and the Philippines and was very skeptical about this pair of shorts when I aw so many 1 and 2 star reviews. You need to remember that these are UK sizing on the website, not USA sizing, so a 38 is not going to be a 38 waist USA (a 38 UK is more like a 29-30 USA). Anyways, I ended up buying these because the memory foam seat cover that I also bought from decathlon was starting to wear away. This shorts were amazing! I have never felt so good or had such a comfortable ride EVER in the 25 years that I have been riding. I do not like the spandex-type shorts, especially since foam padding makes those types of shorts look very unattractive. These look like board shorts (they are long and will reach close to your knees). The sizing was spot on. I wear 33 inch waist USA jeans, and I chose the 42 S-M size shorts. Many of the comments are totally not understanding the sizing. One comment said a 39 inch waist corresponded to a medium.....um..no it doesn't.. (a 39 inch waist is more like an XXL.) Do not be dissuaded by the negative comments. These are stylish, comfortable, and correctly sized short. If they had more in stock online in M, I would buy more!

good enough

not too flexible, but do the job

icon-circle-checkmark verified purchase
Luciano

Used it once loved them

Skip to reviews

Size Guide

Size Guide Visual

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
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs

 

Size Guide Visual