The bicycle helmet Björka Rock is our flagship helmet 2020. Your favorite Björka helmet for all-round cycling: road, cyclo-cross, track or triathlon - 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 foam EPS (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.