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Mountain Bike Shorts ST 900 - Black

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Sale price: 275 SAR

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We've designed these durable mountain-biking shorts for rides of up to four hours in warm weather. Under-shorts sold separately.

The snag-resistant fabric to ride through undergrowth with no worries all summer. And with its stretch fabric to move freely. It also has 2 flat secure pockets and 2 adjustment rip-tabs at the waist.

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Sale price: 275 SAR

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1113 reviews

Mountain Bike Shorts ST 900 - Black
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Decent quality, a little too short for me.

Solid quality, just a little too short for me I think. I'm 6'3 tall, anyone shorter the length is fine.

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Shorts that come up short

Comfy shorts that seem well made. Unfortunately I feel annoyed that they don’t come down to the knees as the images suggest. These look ridiculous when you have knee pads on as you get a gap between the top of the knee pad and the bottom of the shorts. So these shorts will be relegated to road cycling duties. If they were longer and covered the knees they would be great!

Excellent shorts

Very comfortable to wear due to the stretchy fabric. Great quality and seem to be wearing well. A 3/4 length version would be absolutely fantastic

No but for the price

Good fit comfortable material more pockets will be nice

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Good product


Mountain bike shorts

Great product with zipp pockets and adjustable waistband

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Best touring shorts I know.

These are perfect, the absolute best I've had for touring. Very robust, the material is nice to touch, with a bit of stretch, no seams around pelvic bones makes them very comfortable for extended amounts of time in the saddle, they las a very long time, and the zippers are good quality. A very important thing - the little hoop thing that you use to button them up is made of non-corrosive metal, which is extremely important in case when you sweat over it for 10 hours a day, often without washing (either yourself or the trousers) for quite some time.

Great shorts

Cannot comment on blunt trauma protection as these are not padded... but when bouncing up and down hills in terms of support... its like my junk is wrapped in hugs... Great stuff!

Great shorts terrible sizing

After reading previous comments about the sizing being small I checked to make sure i measured my hips not waist and ordered the correct size for me going by the size chart. Even double checked with customer service as i needed them for this weekend ... They arrived today I should be smack bang in the medium size range.. so ordered a medium as I was advised by decathlon which as it turned out was way to small. Sent back and not happy. Quality wise they seemed great

Good quality, price could be better

Comfortable and hard wearing. Ideal for my commute to work. Price a little steep.

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Sizes way too small

Unfortunately I won't be able to wear these shorts as the size is way too small. Always been wearing M sized bib shorts, these ones are so tight I almost could not put them on. Not sure I can return it since I've detached the two pieces. Disappointed.

I'm deeply sorry to read that the sizing guide was not clear enough. The measurements are for the hips and not the waist. This can cause confusion.
Please return them to us for a refund or an exchange.
Peter, Cycling Manager, DECATHLON

Bought for my son and he loves them would definitely buy them again

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best ever

As usual Decathlon came up with the goods. Some MTB shorts are so expensive and they needn't be- these are very well designed (by bikers, obviously), fit great, have useful features (zipped pockets away from the hips, a high waist at the back, etc) and are really stretchy. I wear them off-road, on-road and when I am camping too. I've cycled 1000's of miles in them. And they're so cheap I'm about to buy a second pair right now!

Ideal touring shorts

I had struggled to find a good fit pair of shorts for 3 season cycling/cyclotouring and these fit the bill perfectly. Well made, comfortable using a padded liner and durable. They are well designed and a quality product.

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Great shorts very robust

Great pair of shorts sturdy with good side pockets

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