Product Information ​1.Brand：ROCKBROS ​2.Name：Ling Zhe Cycling helmet ​3.Product Material： ​Main body: PC outer shell + EPS foam ​Lining: ionic+ ® plant-based lining ​3D printed lining ​Webbing: nylon Buckle: PP/POM ​4.Head circumference: size M(58-62cm), size L(58-62cm) ​5.Weight： ​≈280g±30g(Standard version) ​≈320g±30g(Upgraded version) Protection Keel Structure Hardcore Protection High-density foaming one-piece molding. Built-in bionic keel Advanced protection absorbs impact It is woven according to the shape of the bones of the human head to make the helmet shape more suitable for the head. Multi-layer structure protection safer riding Made of PC+EPS material with one-piece molding process, it provides better protection for your every ride. One-piece molding technology PC+EPS safety protection The use of high-density EPS foam body, thickened PC shell one piece molding technology to make the helmet structure more compact, effectively absorb the impact of vibration to protect the head safety. inioc+ technology plant-based antibacterial lining Easily removable lining, ionic+ plant-based odor control and antibacterial technology to prevent sweat from breeding bacteria making it easy to clean and maintain. 20 air guide holesVentilated and breathable The helmet is covered with breathable holes which guide the wind and breathe, and the head is always dry, allowing you to ride freely on the roads and mountain roadsand enjoy the riding time. Integrated adjustment system Compatible with more head shapes Allows the wearer to adjust the helmet according to their head shape and size ensuring the helmet fits snugly on the head for better protection.