S-Raw DOT Motorcycle Half Helmet Summer Motorcycle Helmet Adult Scooter Half Helmet Meets DOT Safety Standards Vintage Cute and Cool Style Half Helmet with Sleek Design Top Quality & Durable ABS Thermoplastic Resin Shell. Provides a Higher Degree of Protection and Impact Absorption Helmet Liner is Soft and Comfortable. Adjustable Double D Ring Secured Nylon Chin Strap. Well Vented All Purpose Product for Four Seasons Especially Summer Riding Please measure your head size before making a purchase. The circumference of the head should be measured at a point approximately one inch above the eyebrows, or at whatever point gives the largest possible measurement. Label Size L: Suit For The Head Circumference 23.2-23.5 inches(59-60cm); XL: Suit For The Head Circumference 24-24.4 inches(61-62cm). XXL: Suit For The Head Circumference 24.8-25.2 inches(63-64cm)