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Btwin CBH100

Sale price: $24.99 Regular price:

This helmet can be easily adapted to the shape of your head using the adjustment dial. Lighting option for more peace of mind. Helmet can be returned or exchanged under our terms if not suitable.

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Size: Select a size
Sale price: $24.99 Regular price:

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8609524

Product Videos

Product Features

Btwin CBH100 | Do you want protection on your occasional and recreational rides around town on roads, on cycle paths, and in parks?

This helmet can be easily adapted to the shape of your head using the adjustment dial. Lighting option for more peace of mind. Helmet can be returned or exchanged under our terms if not suitable.

A photo of the Btwin CBH100 in use


Free your head with the adjustment dial and adjustable straps.

User comfort

Pamper your head with the washable foam inserts.


Get some fresh air with the 6 vents!


Stay visible by clipping 1 light to the back of your helmet.

Shock protection

CPSC1203 certified

Weather protection

The ”cap” shape protects you from the rain and sun so you can stay on track

Product Lifestyle Image Gallery

Image Gallery

Btwin CBH100,unspecified

Product Customer Reviews

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1873 Reviews
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Btwin CBH100,unspecified
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Bike Helmet

OK product. Fitting is a little off. I have seen better design for the same price range.

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Good value

Overall decent helmet. Looks weirdly big on my head and the outer plastic is extremely thin (like you can easily push it in and out) but the inner materials seem strong.

Excellent value

Good protection at an excellent value.

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Basic but does the job

Not if your size is 1 cm in the other upper limit by the next size up

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Cycle helmet

Love the look of Decathlons cycle helmet,reminds me of retro italian motor /Cycle sports helmet.

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Cycling helmet

£10 for a cycling helmet for my wife. Cheap as chips, looks good and does the elemental job of keeping her head safe.

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100 city

Comfortable good fit, great in warmer weather, we'll vented.

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Does the job

Good, but will be investing in something more sturdy in the future.

Excellent value

A valuable sports store

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Great helmet

Comfortable and beautiful

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Excellent product

As above plus excellent service Would highly recommend


Purchased for my daughter. One of the only styles she likes, it looks quite good and seems robust so far. The fit is good. Only issue is the lack of vents, however you can tell by looking at it that it was not designed with maximum ventilation in mind. So we can't complain.

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BTWIN 100 City Cycling Helmet Black

i got a size large and its an excellent fit for me its comfortable and also has great support for my head so i am insured a safe cycle. I have had many more expensive helmets which I must admit felt no more comfortable and light on my head. I wouldnt say it looks that "flash", but maybe thats a plus for some people. My daughter in particular says it does not look that cool, more like a horse riding helmet. As per all the other reviews and for Decathlon gear in general fantastic value for money and sporting excellence.


Arrived very quickly, Looks great, feels great & I don't look like a complete berk whilst wearing it (I sometimes wear a baseball cap with it too/under the helmet)

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Additional Product Information


Main lining: 100.0% Polystyrene - Expanded ; Foam: 100.0% Polyurethane ; Webbing: 100.0% Polypropylene ; Shell: 100.0% Polycarbonate ; Buckles: 100.0% Polyoxymethylene

Cpsc1203 standard certified

CPSC1203 standard


S: 20.9” - 22”M: 21.7”-23.2” L: 23.2” - 24.8”If you are between sizes, choose the larger size.Choosing the right-sized helmet and getting the fit right is essential. For kids, never buy a helmet that is too big on the assumption that they will grow.


For maximum protection, the helmet should be in close contact with your head, and the fastening system must always be correctly adjusted without being too tight around your forehead. When the straps are properly adjusted, the helmet should not slide forward, back, or sideways. For this reason, there are several sizes available. We recommend that you try on different sizes to find the best fit.


Size S: 8.5 ozSize M: 8.8 ozSize L: 11.4 oz


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 are clearly visible from up to 360' away. Accessories, such as mounted cameras, that have not been approved by the manufacturer may damage the helmet's features and affect its performance.

Main materials

EPS liner: Expanded polystyrene Outer shell: Polycarbonate


We recommend that you replace your helmet after 5 years starting from the manufacture date (shown on the label on the inside of the helmet).As damage may not be visible, we recommend discarding and replacing any helmet that has suffered an impact.Using solvents or other aggressive products could affect your helmet's effectiveness.

Returns conditions for personal protective equipment

Make sure that this product fits properly.If you do need to return it, you will need to make sure it still has its instructions, labels, and, where applicable, original packaging so that it can be reconditioned. Let's take care of our planet, together.

Storage instructions

Do not expose to high temperatures (over 122°F, particularly on your car's rear dash), and store in a dry place away from direct sunlight.



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