Name: ST 900 Mountain Bike Shorts
Brand: ROCKRIDER
SKU: 2181103
Price: 60 CAD
Availability: InStock
Rating: 4.92 (12 reviews)

Comfortable for up to four hours with the ergonomic foam pad.

Sitting comfort

Actively wicks perspiration to the outer surface for quick drying.

Moisture management

Fitted cut without compression, very elasticated waistband.

Stability

Spandex-blend fabric for freedom of movement.

Stretch

You just need one:these undershorts are compatible with mountain biking shorts.

Compatibility

Lightweight

These comfortable mountain biking undershorts are designed for rides lasting up to 4 hours.Strike a balance between support and simplicity.


Maximum wash temperature of 30°C. Very delicate cycle.

Iron at a maximum soleplate temperature of 150°C.

Maximum wash temperature 70°C. Normal cycle.

Ironing at a maximum iron soleplate temperature of 200°C.

Practice Conditions

Skill Level

Pocket

Number of Pockets

belt height

Type of Length

Weather Conditions

Reversible

Style

With Straps

Main Material

Bibless undershorts can be much more practical. But do you get enough support?
To guarantee the support you need even without straps, we made a pair of undershorts that hugs your body just like boxers. 
The elastic waistband stays in place with no adjustment needed.


Undershort support.

The pad has been designed for regular users who want to improve at mountain biking. The support foam is soft and dense. It protects cyclists’ pressure zones for up to 4 hours. The stretchy outer layer hugs your body so the soft foam pad moves with you.  
Foam thickness: 13 mm (1/2")
Foam density: 100 kg/m3 (6 1/4 lb/ft3)
Foam firmness: 25 kPa (3 1/2 psi).

A base layer with added comfort.

Undershorts are to mountain biking what kilts are to Scotland: you wear them with nothing underneath!
To avoid chafing, we recommend changing them and washing them as if they were underwear.
When you’re riding, your shorts and undershorts should never be attached.
Why? Because each has a different role:
- The undershorts stay snug against your skin for comfort and support.
- The shorts move for better freedom while cycling.

Shorts, undershorts.

Find detailed info on care instructions for mountain bike clothing on our website

Care instructions

Based at the Btwin Village in Lille, our product design team constantly works to make cycling more comfortable for our users.
Our goal is to create products that respond to our users’ needs and promote a good cycling experience.


Product tests

Bike Shorts and Pants

The anatomical chamois pad with high-density foam fits your body perfectly.

Fitted without compressing the legs, with a highly elastic waistband.

User comfort

Wide, elastic silicone band at the thighs.

Wicks away perspiration and dries quickly.

Very practical pocket on the outside of the thigh for easy access while riding.

Pockets

These bibless cycling shorts have the most comfortable foam pad in our range.

Professional dry cleaning with tetrachloroethylene and all solvents listed opposite the F symbol. Normal cycle.

Intensity

Length

Frequency

Season

reinforced area

retaining strip

Stitching Type

Zipper Type

Our product designers work continuously to make cycling more comfortable for our users.
We test our products in the field, as we are convinced that subjecting them to real-world conditions, like the ones you experience on your bike, is the only way we can continuously improve them.

The RC 500 cycling shorts come with a new anatomical chamois pad. 
The central seam lets the pad fold. This construction ensures a perfect fit and stability in the saddle. The foam pad is designed for men and moves with you as you ride.

New anatomical pad

The chamois pad is made from a unique combination of materials for the protection you need on your long rides. The pad has a protective, high-density, 120 kg/m3 foam insert under the sit bones and the entire undercarriage. The top layer of fabric, which is in direct contact with the skin, is made from spandex and brushed polyester threads to prevent rubbing and irritation. All of the layers are breathable and wick perspiration.

Breathable, high-density foam

Prevents the growth of wild vegetation

Fitted cut on the hips, adjustable waistband and stretch fabric

Water-repellent fabric and insert in the seat area for increased durability.

Water repellent

So smooth and stretchy, you’ll forget you’re wearing it.

Freedom of movement

Micro-perforated fabric in the crotch area

Two zippered pockets: one for your phone, one for your garbage

These mountain biking shorts were designed for All-Mountain/Enduro biking in warm or cool weather. Adjustable waist, 2 secure pockets

Place of Practice

Type of Bell

Undershorts

Our model is wearing a size M top and size M bottoms. He is 1.74 metres (5'9") tall.

Sizing Information

Rockrider recommends wearing padded undershorts under All Mountain shorts.
The undershorts fit discreetly under your shorts, keeping you ultra-comfortable as you ride.

All mountain bike undershorts are compatible with these mountain bike shorts.

Our tip: wear undershorts for added comfort!

Based at the Btwin Village in Lille, our product design team constantly works to make cycling more comfortable for our users.
We strive to create products that meet our users’ specific cycling needs and eliminate unnecessary features.

A product’s environmental impact is calculated based on its entire life cycle using various indicators.
An ABCDE rating shows the environmental impact of a product. Put forward by ADEME, it takes into account production, transportation, usage and waste generated at the end of a product’s life.

Decathlon displays this information voluntarily to help you identify products with lower environmental impact.
Learn more at: sustainability.decathlon.com

Our products’ environmental impact

Experience nature. The durable fabric won’t get snagged or worn.

Special regular cut and stretch fabric for riding comfortably.

With undershorts that effectively wick away perspiration.

Take everything you need with you in the zippered pocket on the right thigh.

These mountain biking shorts are designed for warm weather. Elastic waistband and secure pocket.

Our model is 1.87 m tall and weighs 77 kg. He is wearing a size M top and size L bottoms

Inside leg: 28.5 cm in size L.

Model’s measurements

This foam pad is designed for occasional users wanting to improve at mountain biking. The support foam is soft with medium firmness. Provides good user comfort and protects the cyclist’s pressure zones for rides of up to 2 hours. 

Foam thickness: 13 mm
Foam density: 65 kg/m3
Foam firmness: 25 kPa.

For carefree riding, plan ahead and keep the essentials handy:
- On your right, a secure pocket (17 cm x 15 cm) with a zipper that’s easy to open (even with gloves on!) so you can access items you need while riding with only one hand, such as your tissues, tire lever, etc.

One secure pocket

When mountain biking, gloves are often the last thing you put on and the first thing you take off. These shorts have a buckle on the waist so you can keep your gloves handy without putting them in your pockets. You can snap your ST 100 and ST 500 Gloves to the shorts with the press stud and keep them handy at all times.

Keep your gloves handy!

You can find detailed instructions to care for your mountain bike clothing on our website.

The "warp and weft" fabric withstands rubbing and snags.

Preformed foam pad. The seams are positioned to prevent chafing.

Enjoy the wide cut, stretch fabric, and elastic waist.

Breathability

Take everything you need in the flap pocket on the right thigh.

These mountain biking shorts are resistant to vegetation and designed for your first mountain bike rides.

Ironing at a maximum soleplate temperature of 110°C. Steam treatment may cause irreversible damage.

Don't forget: cycling shorts should be worn without underwear.
Why?
Wearing underwear may cause irritation.
Your skin may rub against the seams and elastic of your underwear.
Chafing and shearing combined with perspiration (heat + humidity): a recipe for infection. That’s why our shorts come with anti-bacterial pads.
Dare to wear shorts without underwear!

Cycling shorts: the mountain bike rider's kilt

Machine wash inside-out on the synthetics cycle at 30°C. Don’t use too much detergent, and don’t use softener. 
Best to air dry in a warm, well-ventilated place.

Our care tips

Fabric is light but resistant to rubbing against your bag.

Abrasion resistance

Our breathable fabric keeps you dry throughout your ride.

Quick drying

Lightweight and comfortable to wear. 
180 g (6 1/3 oz) in size L.

This mountain biking jersey was designed for All-Mountain/Enduro biking in warm weather. Lightweight, quick drying.

Waterproof

anti-uv

Collar Type

sleeve length

To determine whether a fabric is breathable, we measure its evaporative resistance (test based on the ISO 11092 standard). The lower the resistance, the more the fabric lets perspiration escape, and therefore the more breathable it is.

Is this fabric breathable?

This jersey has been designed to offer great freedom of movement. You won’t notice it whether climbing or descending. The close fit and colours have been selected to guarantee a pure all-mountain style.

Designed for steering

Our products’ environmental impact 

Jackets and Tops

onlyonline

The warp and weft of the fabric withstands friction and resists snags.

Ergonomic, pre-shaped foam pad (13 mm [1/2"])

Special relaxed cut and stretch fabric for riding comfortably.

Take everything you need in the 4 handy pockets.

Eco-design

These mountain biking shorts are designed for riding in warm weather for up to 4 hours. Elasticated waistband, 2 zipped pockets and 2 snack bar pockets.

Our model is wearing a size M top and size M bottoms. He is 1.83 m (6') tall.

- At the back there's a zip-up pocket for things like keys, credit cards, etc. (14 cm x 7 cm [5 1/2 x 3"])
- There's a zip-up water-repellent pocket on the back of the thigh that's easy to access (even with one hand) and positioned to protect your phone from falls (20 cm x 12 cm [8 x 4 3/4"]).
- There are two pockets along your thigh for storing cereal bars (15 cm x 4 cm each [6 x 1 1/2"]). 

Based at the Btwin Village in Lille, our product design team constantly works to make cycling more comfortable for our users.
Our obsession is to create products that respond to our users’ needs and promote a good cycling experience.


clearance

Pre-shaped medium density foam pad.
Thickness: 13 mm
Density: 100 kg/m3

Stretchy fabric ensures shorts stay in place at the waist and thighs.

Fully co-designed cycling shorts. Special attention was paid to the waistband and hems: an excellent fit without excessive pressure!

To ensure greater comfort in the saddle, we created this medium density chamois pad.
The fabric is soft and breathable. The padded zone is soft, with a density of 100 kg/m3 and a thickness of 13 mm. Perforated fabric actively wicks away perspiration. The pad keeps you comfortable on rides of up to 2 hours.

Our new medium density pad

The shape of the padded zones was defined by tests on a sheet of pressure, designed from a dummy moulding and approved after various trials and usage tests. These tests, conducted on real cyclists, involved measuring the pressure points on the saddle. The padded zone covers contact points where pressure is greater. There is a dart at the front for a better fit.

Shape

The ischium bone and the perineum are covered and protected. The reinforced area between the legs is relatively narrow to prevent irritation from rubbing while pedalling. Channels have been embossed into the reinforcements to provide greater flexibility.

Reinforced areas

Machine wash at 30°C. Wash on a synthetics cycle. Turn the garment inside out. Do not add fabric softener. Hang to dry in a warm, well-ventilated area. Do not tumble dry. Do not dry clean. Do not add bleach. Do not place on a heater to dry.

Based at the Btwin Village in Lille, our product design team constantly works to make cycling more comfortable for our users.
We strive to create products that meet our users’ specific cycling needs and eliminate unnecessary features.We then test our products in the field, as we are convinced that subjecting them to real-world conditions, like the ones you experience on your bike, is the only way to continuously improve our products.

Brush up with nature! The tightly woven fabric withstands abrasion.

Cut is designed for mountain biking to provide better freedom of movement.

The breathable fabric keeps you dry throughout your ride.

Compact design

Zippered pocket in the back for carrying small items. 

Lightweight and comfortable to wear. 
170 g (6 oz) in size L.

This short-sleeved jersey is designed for your first mountain bike rides in warm weather.
Compact, regular cut and durable material on the sleeves.

Tightly woven fabric allows you to ride along trails without worrying about branches and leaves.

The result? A real mountain biking jersey that resists vegetation and friction from the straps of your hydration backpack.
The material also offers good ventilation!

Resistant to friction

This mountain biking jersey is both sporty and relaxed!
The cut and seams are designed to prevent friction and keep you as comfortable as possible while riding.
For example: the back of the jersey is long enough to keep your back covered when leaning over your handlebars.

Straight cut

Plan ahead and keep the essentials handy:
 - On your right, a secure pocket (16 cm x 11 cm [6 1/3 x 4 1/3"]) with an easy-to-open zipper (even with gloves on!) so you can access whatever you need while riding with one hand, such as your tissues or tire levers. 
- The jersey material is very stretchy; we recommend using it for lightweight items.
- You can pack the jersey down into this pocket for easy transportation and storage. 

Length: 16 cm (6 1/3")
Width: 10 cm (4") Height: 5 cm (2") 

Packed size

Wear a helmet and gloves when mountain biking: not just for falls, but also to protect yourself from low branches! For comfort, wear a pair of padded shorts to prevent chafing. A water bottle or hydration backpack will keep you hydrated. And finally, puncture repair spray so you can finish your ride without needing repair tools.

Advice from the team

Designed to get your road cycling off to a good start. Say goodbye to irritation and give these shorts a try.

Machine wash at 30 C. Synthetic cycle. Turn the garment inside out. Do not add fabric softener. Hang dry in a warm, ventilated area. Do not tumble dry. Do not dry clean. Do not add bleach. Do not place on a heater to dry.

Based at the Btwin Village in Lille, our product design team is continuously working to make cycling more comfortable for our users. We strive to create products that meet the specific cycling needs of our users, eliminating unnecessary features.We then test our products in the field, as we are convinced that only by subjecting them to real world conditions, like the ones you experience on your bike, can we continuously improve our products.

Experience nature. Fabric withstands friction and tears.

Stretchy fabric, with two rip-tabs on the waistband to adjust the size.

2 flat, zippered pockets to safely store your belongings.

Designed for rides lasting over 4 hours in warm weather. Undershorts sold separately.

Rockrider recommends pairing the 900 Mountain Bike Shorts with padded undershorts. The undershorts fit discreetly under your shorts. We must say: they’re definitely more comfortable with a pad. 

The 500 and 900 Mountain Bike Undershorts are compatible with the 900 Mountain Bike Shorts.

Based at the Btwin Village in Lille, France, our product design team constantly works to make cycling more comfortable for cyclists.
We strive to create products that meet our users’ specific cycling needs and eliminate unnecessary features.

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ST 900 Mountain Bike Shorts