User comfort - Put on a well-fitting helmet with foam pads that you can forget you're wearing. Adjustable - Tightening knob. Ease of use - Simplified adjustment, the straps are fixed under the ears. Ventilation - 9 large ventilation channels. Impact protection - Complies with EN 1078. Lightweight - Size M - 280 g. Size L - 335 g. FEATURES: 9 vents. Chinstrap fastening: clip.Occipital adjustment: dial. Comfort foam: fixed (available from after-sales).Visor: fixed, detachable.Outer shell: bonded polycarbonate. Space requirements, size M: Length: 30 cm, width: 21 cm, height: 16 cm.HOW DO YOU CHOOSE YOUR MOUNTAIN BIKE HELMET SIZE?: To find your helmet size, simply measure your head circumference (around the forehead). This mountain bike helmet is available in two sizes: .M: 53 - 57 cm.L: 57 - 62 cm.EN 1078 CERTIFIED: European standard setting out the requirements and test methods for helmets to be worn by users of rollerblades, skateboards, scooters and bicycles. The corresponding requirements and test methods cover the following aspects: construction, including field of vision; shock absorption properties, characteristics of the retention system, including the chinstrap and tightening devices; marking and information. WHEN SHOULD I REPLACE MY HELMET?: We recommend replacing your helmet in 2 cases: .1/ After a fall.In the event of a fall, the material of your helmet can deteriorate or even break. Sometimes, you won't even notice. That is why we recommend replacing it if you have the slightest doubt. .2/ After 5 years of use.The foam of your helmet degrades over time. It can deteriorate due to impact, where it is stored, the climate, and its use. We recommend replacing your helmet at least every 5 years.HOW DO YOU ADJUST THE HELMET?: Follow these 2 quick steps to adjust your helmet in 5 minutes: .1/ Clip the 2 straps with the buckle: check that you can still slide 2 fingers between the strap and your chin. .2/ Finally, adjust the tightness around your head. .The helmet should be in contact with your head, without tipping forward, backward, or sideways, even when you're moving. Product tests: Our team of product designers based at the B'Twin Village in Lille is continuously working to make cycling more comfortable for our users. Our obsession is to create products that meet the specific cycling needs of our users and eliminate hindrances to a good cycling experience. .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. conditions: https://tinyurl.com/4jdc584f

Wipe clean only. Foam, 100% Polystyrene, Shell, 100% Polycarbonate, Webbing, 100% Polypropylene.

Something not quite right? You have 28 days from the day you receive it, to send something back.

Please note, we cannot offer refunds on fashion face masks, cosmetics, pierced jewellery, adult toys, and swimwear or lingerie if the hygiene seal is not in place or has been broken.

Items of footwear and/or clothing must be unworn and unwashed with the original labels attached. Also, footwear must be tried on indoors. Items of homeware including bedlinen, mattresses, and toppers, and pillows must be unused and in their original unopened packaging. This does not affect your statutory rights.

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