Mountain Bike Helmet ST 50 - Black

15 VentsChinstrap fastening: clipOccipital adjustment: noneCushioning foam: removableVisor: fixed, detachable.Outer shell: bonded polycarbonate.Space requirements, size M: Length: 31 cm, Width: 22 cm, Height: 15 cm

To find your helmet size, simply measure your head circumference (around the forehead).This mountain bike helmet is available in two sizes:M: 54 - 58 cmL: 58 - 62 cm

European standard setting out the requirements and test methods for helmets to be worn by users of inline skates, 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.

We recommend replacing your helmet in 2 cases:1/ After a fallIn 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 useThe 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

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/ Adjust the straps so that they form a "Y" on each side of your ears. Just below the ear.The helmet should be in contact with your head, without tipping forward, backward, or sideways, even when you're moving.

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.

Make sure that this product fits properly.If you do need to return it, you will need to make sure it still has with the instructions, labels, and if applicable, original packaging. conditions: https://tinyurl.com/4jdc584f

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