Feature: 1. 2-in-1 Helmet: Detachable design makes it easy to convert between full face and half face helmet with a push button in both side of the helmet. 2. Integrally-molded: Hard polycarbonate shell and shock-absorption EPS foam provide impact conservation. Visor provides increased shade for your kid\u0027s eyes. 3. Good Ventilation: 13 flow vents promote hot and cold air transfer to keep your child cool; vented mouth protector for enhanced breathability. 4. Adjustable Size: Easy-to-adjust dial provides a customized fit for different head sizes. 2 sets of liner pads (with 1 set assembled) are provided for easy replacement and cleaning: 12mm thick liner is used for 52 - 56cm head circumference, and 8mm liner for 54 - 58cm head circumference. 5. Great Protective Gear: Perfect for your child while Cycle, skateboarding, roller skating, riding a scooter, longboard, or doing more sports. Specification: Package List: 1 * Helmet