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Mountain Bike Cycling Shorts XC 100

Sale price: $40.00 Regular price: $54.99

The pad on these XC shorts is a preformed, ergonomic foam with 3 densities and gel inserts. The thighs are supported by lightweight, elasticated, and breathable (mesh) straps.

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Size Guide
Sale price: $40.00 Regular price: $54.99

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.

Model: 8515161

Product Features

A photo of the Mountain Bike Cycling Shorts XC 100 in use

Mountain Bike Cycling Shorts XC 100 | Designed for starting cross country (XC) mountain biking. Training

The pad on these XC shorts is a preformed, ergonomic foam with 3 densities and gel inserts. The thighs are supported by lightweight, elasticated, and breathable (mesh) straps.

Seat comfort

Enjoy the comfort of the 3-density preformed foam pad with gel inserts.


Stay dry: absorbent, breathable, quick-drying fabric and mesh straps.

Freedom of movement

Move freely: ergonomic cut, elastic around the thigh, and lightweight straps.

Product Lifestyle Image Gallery

Image Gallery

Mountain Bike Cycling Shorts XC 100,black 

Mountain Bike Cycling Shorts XC 100,black 

Mountain Bike Cycling Shorts XC 100,black 

Mountain Bike Cycling Shorts XC 100,black 

Mountain Bike Cycling Shorts XC 100,black

Questions & Answers

Product Customer Reviews

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221 Reviews
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Mountain Bike Cycling Shorts XC 100,black
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Great bike shorts

Great pad, material and cut. Race fit so size up if your not race fit :)

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Material is good Stitching threads come out

This is my second shorts but stitched threads came out not much worth. Cloth Material is good 4stars but stitching threads 1star

Dear Prasanna,

We are sorry to hear about your dissatisfaction on the product. You could connect to your nearest store or the origin of purchase as they would be able to guide you with a replacement based on the stitching as the product is under warranty.


Cycling Padid Gel

Amazing product

Good pair of bib shorts

Bought it during clearance sale. The chamois is good for an hour ride. For longer rides, you should go for something else. Overall, it is a good pair of bib shorts for what I have paid for it.

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Hi Joseph!

Thank you for your review for the XC 100 Mountain Bike Cycling Shorts! 

You've got it all correct! This cycling shorts were designed for beginner and occasional cyclists who cycle for short distance once or twice a week. It's really light-weight and easy to put on! If you're looking for something with more premium comfort for longer rides, you can consider the Roadcycling 900 Men's Cycling Bib Shorts! It's ultra-comfortable with the ergonomic triple-density pad with gel inserts. It's great for longer rides! Do check it out!

Nor Azhimy Bin Mohd Senin
Omni-Channel Sports Leader
Decathlon Singapore
Rockrider review

well built and comfortable - a bit warm though - will appreciate a thinner mesh - though this is meant for Mountain biking use. the road bike ones are out of stock. good value.

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Hi Thye Bin Matthew,

Thanks for your review! Please check out our Ultralight Sportive bibs if you are looking for something thinner.


Very good product

I am very happy with this product which is better than some branded products costing 3 times more. Very good value for money.

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kvalita za dobrou cenu

Velmi kvalitní cyklo kalhoty za super cenu

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Optimale Radhose

Es geht nix über ein gepolstertes Hinterteil, bin sehr zufrieden,vor allen weil die Nieren durch diesen Schnitt gut geschützt werden, jedoch werden die Art von Radhosen nur für Männer hergestellt, warum kann man dies nicht ändern?


Perfekter Sitz und super angenehm zu tragen.


Sitzpolster ist super, aber die Qualität der Oberschenkelinnenseite. Nach 10 Touren ist die Hose an den Innenseiten schon fast durchgescheuert.

Eine super Hose

Eine super Radhose die bequem und angenehm zu tragen ist.

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Mala calida

A pesar de que tiene mas de 2 años, le he dado muy poco uso y ha estado siempre en el armario, lo he lavado siempre en frio, no he usado suavizante y nunca se ha tendido al sol. Lo he querido volver a usar y me encuentro que algunas zonas la licra ha desaparecido y esta como transparente. El mismo problema con el modelo bike short 900 black.

Hola .Sentimos mucho los problemas ocasionados con nuestro producto , puede pasarse por una de nuestras tiendas DECATHLON para hacer un cambio de producto o modelo por uno que le pueda satisfacer mejor sus necesidades , si este producto no llega a cubrir sus exigencias Gracias por depositar su comentario y la confianza en nuestros productos , atentamente para cualquier otra consulta .

Saludos, Ruben , Monitor Pais de ciclismo ,
Casi de alto nivel

Prenda que no tiene nada que envidiarle a productos de precio mas elevado. La badana es muy buena y resistente y las costuras no generan riesgo de rozadura alguna

Acierto seguro.

Es de lo mejor en badana, por lo menos para mí.

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Acierto seguro

Buen culote. Es de lo mejor en relación calidad precio y sobre todo por la badana.

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Size Guide

Size Guide Visual

Additional Product Information


Main fabric

  • 80% Polyamide
  • 20% Spandex


  • 78% Polyester cationic
  • 22% Spandex

Padding - Inner fabric

  • 100% Polyamide

Padding - Outer fabric

  • 77% Polyester cationic
  • 23% Spandex

What is a "mesh" fabric?

Mesh fabric is thinner, lighter, and more airy than cotton or polyester fabric. This breathable fabric wicks away perspiration more quickly. The material doesn't leave a damp feeling on your skin that can give you chills while cycling. So the bib shorts are more comfortable to wear (second-skin effect).

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.

A rating to compare products' environmental impact

A product's environmental impact is calculated over 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:



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


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