The outside layer: Made up of ABS project plastic material, Aerodynamic shell design ,Can bear big impact and penetration; The middle layer: Made up of famous EPS material, have good absorption of crash energy; The inner layer : Easily removable liner and cheek pads for washable; The glass: Its photic percentage is more than 85%; The belt: Nylon fabric. The Buckle : Quick Release or double D buckle Certificate: Pass Singapore standard