PEACHES New Bicycle Integrally-molded Mountain Road Bike Helmet Sport Racing Riding Cycling Helmet Ultralight MTB Bicycle Helmet Impact resistance: this adult cycling helmet is made from a robust PC shell with a high-density EPS foam interior for excellent shock absorption and protection. The ergonomic internal removable sweat-absorbing liner absorbs maximum external pressure from sport riding activities and protects against impacts. It reduces the risk of cycling injuries for adults. You'll feel safer with this cycling helmet on. Streamlined shape: 22 air conduction systems, no stuffiness, less wind resistance when riding and a smoother streamlined shape that effectively reduces wind resistance. Specifications: Name: Bicycle riding helmet Suitable for: cycling, mountain, road and other outdoor sports Material: outer shell PC internal EPS Technology: In-Mold Colour: 21 colours available Size: 57-62CM) Internal width: 18.5CM, Internal length: 22.5CM Weight: 195G Ventilation holes: 18 Construction: External IN-MOLD (one-piece) impact resistant PC, internal EPS one-piece Dimensions:L30.5*W22.5*H18CM Package Included: 1*Safety helmet