Features1The outer shell uses highdensity PC material to create a strong helmet body, and the inner shell uses EPS foam, which effectively cushions the shock and is comfortable to wear. 2Adopt the technology of onepiece edge wrapping. The joint of the inner layer and the outer shell of the helmet is wrapped by PC. 3Hook and loop fasteners is used to fit between the brim and the helmet. Quick installation/removal of the brim can block the sun and avoid foreign matter flying in. 4Uses a large hole design to make the heat dissipation efficiency better, say goodbye to sultry. Removable comfortable inner lining, easy to clean, keep your head fresh. 5The warning light installation position is designed at the rear, which can quickly and firmly install the tail light to provide safety guarantee for night travel. 6The helmet heat sink is designed with large holes, which can not only strengthen heat dissipation, but also lock the helmet in crowded places in the city to prevent theft.SpecificationItem Type: Bicycle HelmetMaterial: EPS foam + PC outer shell (Integrally Molded)Color: As Pictures Shown Head circumference: M size 54-58cm/21.3-22.8inWeight: Approx. 564g/19.9ozHole number: 8pcsPackage List1 xBicycle Helmet1 x Manual