This full face helmet is constructed from hard polycarbonate shell with shock-absorption EPS foam to provide maximum protection for your kids. With 13 air vents and vented mouth guard, your kids can stay cool even after riding for a long time. The adjustable dial and side straps allow a snug yet comfortable fit. The lining pad is moisture-wicking and washable to reduce the odor and keep fresh, giving your kids much more fun. The helmet is also freely detachable to use as a half-face helmet, very convenient to use. Features: Detachable design allows easy conversion between full face helmet and half face helmet. Durable hard polycarbonate shell and shock-absorption foam absorb external impact and provide maximum protection. Built-in visor increases shades for your kid\u0026#39;s eyes. Aerodynamic design and 13 air vents provide excellent airflow to keep your kids cool and reduce wind resistance. Vented mouth guard for improved breathability. Rear regulator dial makes the helmet fit head sizes: 52 - 56cm. Adjustable webbing strap with quick-release buckle keeps the helmet in place. Moisture-wicking lining pad for comfortable wearing experience, it is removable, washable to keep the helmet clean, fresh, and odor free. Great protective helmet widely used in cycling, skateboarding, roller skating, inline skate, scooter and other sports. Specifications: Material: PC + EPS Color: Titanium\u0026amp;Black\u0026amp;Yellow \/ Blue\u0026amp;Yellow\u0026amp;Black \/ Blue\u0026amp;Black\u0026amp;White \/ Black\u0026amp;Red\u0026amp;White \/ Fluorescent Yellow\u0026amp;Black (optional) Head Circumference: 52 - 56cm \/ 20.5 - 22.0in Weight: Approx. 360g \/ 12.7oz Package List: 1 * Helmet