Features: * - Lightweight Compatible With motorcycles, cruisers, scooters & mopeds. * - DOT-approved standards: Half shell skull helmet provides superior impact protection. * - Y-strap lock: Quick-release Compatible With on and off. * - Proper biker headgear & riding gear Compatible With safety & comCompatible Witht. * - Inner liner fabric: Keep your head cool and comCompatible Withtable Compatible With warm weather riding. Specification: * Material: PVC * Type: Half Helmet * Appearance: Portable-type * Helmets Size:11.4"*9.4"*5.9" Tips: * Size S: Compatible with head circumference 57-58cm * Size M: Compatible with head circumference 59-60cm * Size L: Compatible with head circumference 61-62cm