Breathable fabric and half-length zipper provide good airflow.

Moisture management

3 pockets, including 1 zippered, so you can cycle with everything you need.

Pockets

The jersey’s regular cut gives you the freedom you need for mountain biking.

Freedom of movement

Designed for young cyclists, this jersey supports them during their bike rides in hot weather, for up to 2 hours.

Maximum washing temperature 30°C. Normal cycle.

Frequency

Collar Type

Number of Pockets

reflective

Weather Conditions

sleeve length

Place of Practice

Waterproof

anti-uv

Wheel Size

Pocket

thumb pass

top length

Style

Zipper Type

Main Material

Breathable fabrics, like the ones used for this product, wick perspiration away faster than other fabrics. Their ability to dry quickly and let water vapour escape means your body stays dry. 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.

Breathable fabric

Machine wash at 30°C on a synthetic cycle. Wash inside out. Do not use fabric softener. Hang dry in a warm, ventilated area. Do not tumble dry. Do not dry clean. Do not place on a heater to dry.

Care instructions

Kids' T-Shirts

clearance

Brush up against nature! The durable fabric won’t get snagged or wear out.

Resistant

Sitting comfort

Special regular cut and stretch fabric for riding comfortably.

Stability

With bike shorts that effectively wick away perspiration.

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

Weight

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

Drying in tumble dryer possible. Low temperature, maximum drum exhaust temperature 60°C.

Duration

Intensity

Skill Level

Season

reinforced area

retaining strip

Stitching Type

Practice Conditions

Type of Length

Type of Bell

Undershorts

With Straps

Our model is 1.87 m (6’1") tall and weighs 77 kg (170 lbs). He is wearing a size M top and size L bottoms

Inside leg: 28.5 cm (11") in size L.

Model’s measurements

Built-in undershorts: Yes
Type of fastening: Buttons
Adjustable waist: No
Built-in waistband: No
Number of pockets: 1
Resistant to vegetation: Yes

In a nutshell

This foam pad is designed for occasional users wanting to improve at mountain biking. The support foam is soft with medium firmness. It provides good user comfort and protects the cyclist’s pressure zones for rides of up to 1.5 hours. 

Foam thickness: 13 mm (1/2”)
Foam density: 65 kg/m3 (4 lb/ft3)
Foam firmness: 25 kPa (3 1/2 psi).

A base layer with added comfort.

For carefree riding, plan ahead and keep the essentials handy:
- On your right, a secure pocket (17 cm x 15 cm [7" x 6"]) 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!

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

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


Product tests

Men's Sports Shorts

Notch to hold the tire lever on the spokes, perfect grip on tire, deflation tip.

Ease of use

Tire lever that clips together for easy storage.

Compact design

Designed for removing your bike tire. The tip allows you to deflate the tire, while its edges attach to the spokes for greater ease.

Tire Assembly

Condition

PA66 polyamide material avoids breakage when bent.

Tyre lever features: 

Bike Tools

Capacity

Mouth comfort

The shape of the bottle is specifically designed for children’s hands

Ergonomic grip

Compatible with Btwin kids’ frame and handlebar bottle cages

Compatibility

This water bottle is designed to fit in children’s hands. Bring 380 ml (13 oz.) of water anywhere!(bottle cage sold separately)

Volume (L)

Volume (ml)

bike bottle cage compatibility

isothermal

Cap Type

This bottle is only compatible with the kids' handlebar bottle cage (reference 8548542) and frame-mounted bottle cage (reference 8548543).

Compatibility: 

Bike Hydration

Clean the bladder and hose using the drying hanger and 3 brushes.

Easy maintenance

Keep your hydration reservoir and drinking tube fresh and clean with this easy to use three-brush set and one drying hanger.

Running Hydration Vests & Water Belts

Watertight

Straps for attaching to the head tube, top tube and down tube

Designed for bike rides on trails in fair to rainy weather.

Height (cm)

Weight (g)

Position

Attachment Type

Volume

The smartphone pouch has passed showerproofing tests and can withstand 12 cm of rain over 2 hours. 
The pouch lifts for simple smartphone insertion.

Waterproof smartphone pouch

Bottom opening on the smartphone pouch to pass a USB cable through. Left-side pocket opening for connection to an external battery.

Cable opening

High-frame bikes (closed frames), both electric and non-electric. Ensure the strap lengths fit your specific frame.

Bike Bags & Backpacks

100 mm diameter pressure gauge accurate to 1 PSI.

Precision

Power

The 260 mm metallic base provides excellent stability

Repair

We developed the 900 pump so you can easily pump your bike tires up to 10 bar or 145 PSI.

Valve Type

hose

type of connexion

inflation mode

Pressure Gauge

Pressure (Bars & PSI)

Length (cm)

Pump Type

The 900 bike foot pump will be your go-to for inflating your bike tires as easily as possible. Its oversized pressure gauge (100 mm) and accuracy of 2 PSI (or 0.2 bar) mean you’ll always have the optimal pressure in your tires to maximize performance, grip, and comfort, no matter the terrain!
There’s also a visual marker to make it even easier to read when visibility is poor.

Inflation precision

The 900 foot pump has a 32 mm diameter cylinder, making it a breeze to build up pressure in your tires.

Easy inflation

The connection head has an ergonomic lever and markings with clear positions to easily differentiate between the actions of inflating / connecting. The intuitive design improves the user experience, ensuring a flawless inflation process and increased safety with the pinch-free lever.

Intuitive ambidextrous bow

The handle on this pump was designed for an excellent and comfortable grip.

Ergonomic handle.

The metal base and design of this pump make extremely stable.

The 900 bike pump has been awarded a Red Dot as part of the Red Dot Design Award 2024.

Product with a design award.

Bike Pumps

29" diameter tires with a 1.90 to 2.50 cross-section.  

Optimized composition to guarantee your inner tube has a good seal.

Compatible with 29" tires, with a 1.90 to 2.50 cross-section and a 48 mm Presta valve.

Self-Repair

Section

Etrto

Check all the information indicated on the sidewall of the tire (diameter and width). For example, 29 x 1.90 means that the tire is 29" in diameter and 1.90" wide.
The dimensions in mm are also on the tire sidewall.
For example, 50-622 means that the tire is 50-mm wide with a 622-mm inner diameter (approx. 29 x 2.00).

How to choose your inner tube

Remove the old inner tube using Btwin tire levers.

Removing an inner tube

Check the condition of your tire and replace it if necessary. 
Make sure no objects are lodged in the tire.
Check the condition and position of your rim strip.
A rim strip that’s even slightly bent can cause punctures.
Check that your rim doesn’t have any other issues that could damage your inner tube.

Checks to carry out before installing an inner tube

Watch our video before you start.
Pre-inflate the inner tube slightly to avoid pinching.
Make sure you’re using the correct valve for your rim and then insert it.
Put the entire inner tube inside the tire so that it fits inside the rim.
Take care not to pinch the inner tube when installing it.

Installing the inner tube

Start installing the tire at the valve.
Finish installing the tire across from the valve to avoid pinching the inner tube.
Never install your tire with a tool or a tire lever, as you risk pinching or puncturing the inner tube.

Installing the tire

Carefully inflate your tire to the pressure recommended by the manufacturer (visible on the tire sidewall in PSI or bars: 1 bar = 14.51 PSI).
Regularly check that your tire is in the correct position as you inflate it.

Inflating the tire

To avoid punctures from pinching and for the best tire performance, we recommend checking your tires and inflating them to the suggested pressure before every ride.

Pro tip

Weight:

Bike Tubes & Valves

Reinforced palm to absorb shocks and vibrations.

Impact protection

Your child can do it themselves: rip-tab opening and tab between the fingers.

Easy dressing

Afraid of scrapes when cycling? A pair of fingerless gloves will let your child ride with confidence. Just like a cyclist, they’ll be ready for anything!

Glove Type

Reinforced Palm

Protection Area

anti-slip

Tightening Type

These gloves are available in size 4 years and 6 years.4 years: for a palm circumference of 13.9 cm to 14.9 cm (5 1/2 to 6")
6 years: for a palm circumference of 14.9 cm to 15.9 cm (6 to 6 1/4")

Size grid:

The design matches B'Twin's 14 and 16" bikes. These imaginative products ensure kids never want to get off their bike!

What inspired this design?

Kids Bike Accessories

Vol: 0.5 L (1/2 qt.). Can hold a spare inner tube, tire levers, patch kit, etc.

Attaches under any saddle using velcro tabs.

Easy assembly/dismantling

Easy-to-open zipper.
Cleans easily with water.

Designed to carry the minimum needed for bike repairs and small personal belongings. 

Can carry:
- 1 road inner tube (700) + 3 tire levers + 1 multitool + 2 x CO2 cartridges OR - 1 MTB inner tube (27.5") + 3 tire levers + 1 multitool

This product has a hook for attaching a Vioo Clip, an LED light that can be clipped on anywhere and unclipped in an instant.
With a red or white light that can be used in continuous or flashing mode, you will be clearly visible from up to 120 m (130 yd) away. Battery life is 9 hours in flashing mode, 4½ hours in continuous mode. Easy to recharge via a USB cable (sold with the VIOO Clip).

This inner tube is suitable for 24" diameter tires with 1.90 to 2.20 cross-section with a 33 mm Schrader valve.

Check all the information indicated on the sidewall of the tire (diameter and width). For example, 24 x 2.10 means your tire is 24" in diameter and 2.10" wide.
   

How to choose an inner tube

Remove the old inner tube using a tire lever.

Check the condition of your tire and replace it if necessary. 
Make sure no objects are lodged in the tire.
Check the condition of your tire rim strip. A rim strip that’s even slightly bent can cause punctures.
Check that your rim doesn’t have any other issues that could damage your inner tube.

To prevent pinching and achieve the best performance, we recommend checking and pumping up your front tire as needed before each ride.

The screw top and mouthpiece ensure a watertight seal.

Ergonomic shape and soft material make it easy to drink as you ride.

Limits taste and odour

Comfortable mouthpiece made of soft elastomer.

Graduated scale makes it easy to track intake.

Compatible with our Water Bottle Cap (item code 8561474) for the mouthpiece.

Versatility

Compatible with all bottle cages on the market.

There’s nothing worse than a plasticky taste or smell in a water bottle. But this occurs with most cycling water bottles. 
We tested numerous plastics before finding just the right one, which is flexible and has a neutral taste and smell. When blind-tested against bottles from other leading brands, ours were the most neutral-tasting.

No more plasticky smell or taste.

Clean the water bottle thoroughly after each use. If you use isotonic drinks, rinse all parts of the bottle, cap and mouthpiece to make sure there is no liquid remaining inside. Use liquid detergent and a long brush to clean the bottom of the bottle. 
Dry well and store with the cap off. Otherwise, mould could develop in the bottle.
Do not put in the dishwasher (particularly above 70°C[158°F]).

How to care for your water bottle

Photochromic category 1- 3 lenses 100% UV protection 

Sun protection

Anti-fogging

Lenses made from high-resistance polycarbonate plastic.

Robustness

Second generation unisex glasses for speed sports. They will thrill experienced cyclists looking for strong wind protection.

Sports/

Cycling/

Cycling Clothing/

Cycling Pants and Overpants/

btwin

Kids’ Biking Shorts - 100