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Mountain Biking Short-Sleeved Jersey ST 100

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Sale price: $12.99 Regular price:

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Model: 8517601

Product Features

A photo of the Mountain Biking Short-Sleeved Jersey ST 100 in use

Mountain Biking Short-Sleeved Jersey ST 100 is designed for

Hit the trails in this mountain biking jersey. The shape was designed for comfort! It has 2 secure pockets, including 1 easy-access smartphone pocket.

Freedom of movement

The loose fit and seams were designed based on your riding position.

Resistant to wild vegetation

The special abrasion-resistant knit won't run or snag.


This jersey is made from breathable fabric for good ventilation when riding.


Carry keys, a debit card, smartphone, tissues in the 2 pockets, 1 with a zipper.

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Mountain Biking Short-Sleeved Jersey ST 100,black 

Mountain Biking Short-Sleeved Jersey ST 100,black

Product Customer Reviews

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143 Reviews
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Mountain Biking Short-Sleeved Jersey ST 100,black
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Good size and handy pocket

The material was not what I was expecting but it tis comfortable and easy to wear. The zip pocket holds my phone nicely. The size is perfect

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Quality is bad

First of all my product had greese or stain when I got it. The product is average, the cross line in between Is not straight.

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Hello Pradeep,

Thank you for taking the time to give us your review. Apologies for the bad experience with the jersey. I line on the jersey is a design element and is tilted across the chest. I request you to explain the same at the store and we will be happy to exchange the jersey for a new one.


Excellent item

Excellent item for the price, although a little bit on the small side

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Camiseta ciclismo

Talla pequeña, sobre todo en la axila y el pecho. Suelo usar M y me compre una L y es muy ajusada. La tela es muy muy gruesa porque lo que no extira y hace calor con ella en verano.


Camiseta de muy buena calidad

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Excelente para Ciclo Indoor

Cómodo permite movimiento de brazos sin molestar.

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Excelente adquisición

Muy cómoda, fresca, funcional y a muy buen precio. La recomiendo...

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Tela muy gruesa

No transpira y la tela es muy gorda, talla bastante pequeño

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Hola gracias por tu respuesta, lamentamos que el producto no satisfaga tus necesidades. Puedes acercarte a una de nuestras tiendas y realizar un cambio de producto, por uno que si se amolde a tus necesidades.

Sergio Granero SLO Ciclismo y Running

Maillot manga corta

No es cómodo, es de fibra pura con lo que se suda mucho y no evacua el sudor

Hola Jesús.

Sentimos las molestias ocasionadas.

Sentimos nuestro producto no cumpla con tus necesidades.

Te recomendamos que te acerques a tu tienda Decathlon mas cercana para recibir asesoramiento técnico.

Te recordamos que dispones de 60 días para cambios o devoluciones.

Un Saludo.

Juan B. - Experto en Ciclismo

Buen ajuste

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Para verano excelente

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Buenas prenda

El bolsillo es un poco pequso, con un poco más de espacio en dicho bolsillo le daría un 10

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Tipo de tela gruesa, comparada con un malliot de poliester, lo utilizo para andar en bici por ciudad y va muy bien, calidad precio bueno.

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Tanto para práctica deportiva cómo para paseo

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Très agréable…

Très agréable

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Size Guide

Size Guide Visual

Additional Product Information


Main fabric

  • 100% Polyester cationic

  • 9% Spandex
  • 91% Polyester cationic

Clever pockets

To ride safely, keep everything tucked away but close to hand: - On your left, a pocket with an elasticated flap for personal items: keys, money, a debit card and more. No need to dig around the bottom of your bag before and after your ride! - On the right, a secure zip pocket that's easy to access (even with gloves) to reach what you need with just 1 hand: smartphone, tissues, etc.

A design and cut for comfort when riding

This jersey is both sporty and casual with a V-neck and mottled-effect fabric. But most of all it's a real mountain biking jersey! The cut and seams were designed to prevent friction and for comfort on the bike . For example, the long length keeps your entire back covered, even when leaning over your handlebars.

A durable fabric for worry-free rides

To hit the trails without worrying about branches and leaves, our ROCKRIDER clothing design team chose a special fabric that won't run if caught on vegetation. The result? A real mountain biking jersey that withstands getting snagged by vegetation and friction from your hydration backpack. The mesh-inspired knit is also ventilated for better moisture management.

A jersey with a story...

What do beginner mountain bikers wear? After observing their wardrobes, we're pleased to offer you this jersey designed especially for mountain biking. Our team of 5 designers spent 18 months working on identifying needs, technologies, designs, prototypes and lab tests and gathering input from a panel of 12 mountain bikers. After lots of test and tweaks, we created a comfortable and clever product. Our testers loved it - Now it's your turn!

Tips from our team

To make your first mountain bike rides enjoyable, remember a few essentials. What are they? Our product manager Sylvain explains: "To learn to mountain bike, remember to wear a helmet: not just for falls, but also to protect yourself from low branches! For comfort, a pair of shorts with a built-in pad will prevent irritation. A water bottle or hydration backpack will keep you hydrated. And finally, a puncture repair spray to finish your ride without worry."



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