The bicycle helmet Björka Rock is our 2020 flagship helmet. Your favorite Björka helmet for versatile cycling: road, cyclo-cross, track or triathlon - for leisure or competition. This premium bicycle helmet is stylish, ventilated and aerodynamic. The Rock, with its double in-mold polycarbonate design, is light (210 g.) And resistant. By wearing a helmet, your safety will be optimal during your bike rides. Comfort will also be there with absorbent EPS foams (expanded polystyrene) benefiting from an antimicrobial treatment. The adjustment system of the Rock bike helmet is just as powerful with a precise, fine and 360 ° adjustment. A comfortably worn helmet is the start of a good bike ride.