Product Colors and Sizes

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Clearance product
  • Deal product
  • Best Seller product
  • Ecodesign product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product

RoadR 100 USA, Lightweight Road Cycling Helmet

Sale price: $29.99 Regular price:

"Little brother" of the B'twin Aerofit 900, borrowing from its aerodynamic design. With wide ventilation openings to suffer less from the heat. Simple tightening with a wheel at the back of the head

Color: Select a color
Size: Select a size
Sale price: $29.99 Regular price:

Free shipping over $35

Free pickup

San Francisco, 735 Market St. Options

Select an available color and size to see options.

About this item:

  • Please note: Helmets are not eligible for return
  • Your safety matters to us. We only sell brand new helmets
  • 2-year warranty included on all helmets
Model: 8618548

Product Features

A photo of the RoadR 100 USA, Lightweight Road Cycling Helmet in use

RoadR 100 USA, Lightweight Road Cycling Helmet | Our design team created this helmet for cyclists starting to cycle on roads and who are looking for a simple, easy to adjust, and well-ventilated helmet.

"Little brother" of the B'twin Aerofit 900, borrowing from its aerodynamic design. With wide ventilation openings to suffer less from the heat. Simple tightening with a wheel at the back of the head


3 wide forehead ventilation openings to suffer less from the heat


Lightweight and compact helmet

Easy to use

HALF Turn-Ring system to quickly adjust the helmet to your head.

Product Lifestyle Image Gallery

Image Gallery

RoadR 100 USA, Lightweight Road Cycling Helmet,base color 

RoadR 100 USA, Lightweight Road Cycling Helmet,base color 

RoadR 100 USA, Lightweight Road Cycling Helmet,base color 

RoadR 100 USA, Lightweight Road Cycling Helmet,base color

Product Customer Reviews

Skip to reviews
1080 Reviews
Write a Review 

RoadR 100 USA, Lightweight Road Cycling Helmet
Filtered by reviews Loading reviews…
Helmet for youth

Nice looking helmet that fits well, has a padding that doesn’t get soggy when sweating, is easily adjustable and looks acceptable to a youth.

icon-circle-checkmark verified purchase

Hello Stephan,

Thanks you for your feedback on this product. We're glad you like it.

See you soon in store !


Price value

icon-circle-checkmark verified purchase
good for price

good for price

Not good!!

Broke after two months of use!!

icon-circle-checkmark verified purchase
Cycle helmet

Good helmet for price

icon-circle-checkmark verified purchase
Decent product for price

This helmet is very reasonably priced, and the quality is decent. Very lightweight, however, so potentially for serious riders, they would need something more durable.

icon-circle-checkmark verified purchase
Good beginner helmet

Decent Helmet size is a bit small but by adjusting the straps this can be fixed. On rides over 15-2 mins head gets warm as there is not that much ventilation but overall is good

icon-circle-checkmark verified purchase
Arrived broken, do not buy online

Helmet is sleek, light, and the adjustable sizing means it fits well. It could have been great value for the money, but unfortunately due to insufficient packaging the helmet arrived damaged in multiple places, compromising the safety and deeming it useless. Despite me sending photos of the breaks in the helmet, Decathlon are insisting that I have to return the item to receive a refund, which seems rather a waste of time and effort to me given that they cannot resell it. Disappointed.

Smart and well designed, but a bit flimsy

Having purchased this helmet following advice from a friend who uses the Roadr900 helmet, I found it to be an attractive and well designed product. My head shape is admittedly quite tall and lumpy, but I noticed there was a lack of padding on the top and back of the helmet that caused the plastic bits to press against my scalp when fitted down properly. This was despite me wearing my measured size and everything else fitting well. Additionally, the outer shell material seemed a little flimsy and there some puckering from the inner foam, though nothing extraordinary. I did also miss holes for my sunglasses but expected on such a reasonably priced product. Overall - you get what you pay for, and in this case an attractive package that does the job with a few niggles.


Just opened the box (that was damaged) and noticed that the top part of the helmet (the glossy black one) is poorly glued to the rest. It basically does not adhere properly and it feels like it is going to fall apart any time.

First Bike Helmet!

Very comfortable and light and I love the size adjustment on the back. By the end of my 15 mile ride home I isn't realise I had a helmet on, excellent.

icon-circle-checkmark verified purchase

Really light and comfortable

Roadr 100 cycling helmet

One thing I really like about this helmet is that it covers a large area of forehead which provides much better protection which other same price range helmet is lack of. Also I found the hard plastic is almost embedded inside the foam part which gives me a very durable feel. Overall, very nice product will definitely but one after this event.

Road bike

Cool! Easy to manage .



icon-circle-checkmark verified purchase
Skip to reviews

Additional Product Information


Main lining

  • 100% Polystyrene - Expanded


  • 100% Polycarbonate


  • 100% Polyoxymethylene


  • 100% Polyurethane


  • 100% Polypropylene

Available sizes

Size M = 21.7"-23.2" / Size L = 23.2"-24.4"


Size M = 8.5 oz / Size L = 10.6 oz

Return policy for personal protection equipment products.

Make sure that this product fits properly. If it doesn't please return or exchange it per our return policy. Please return it with the instructions, labels, and any original packaging, so that it can be reconditioned. Let's take care of our planet, together.



Storage instructions

Keep away from UV rays (direct sunlight exposure) to avoid premature deterioration of the helmet. Do not expose to high temperatures (140°F max.); Store in a dry place.

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