This full face helmet is constructed from hard polycarbonate shell with shock-absorption EPS foam to provide maximum protection for your kids. It Features 13 air vents, vented mouth protection, sun visor, adjustable dial, removable liner and other advantages that bring much fun for your kids. The helmet is also detachable to use as a half-face helmet, very convenient to use.Features:Detachable design, easy to convert between full face and half faceStrong PC shell and EPS foam absorb shock and impact.13 flow vents keep your child cool; Vented mouth protection.Visor provides increased shade for your kid's eyes.Adjustable dial makes the helmet fit head sizes: 52 - 56cm.Removable, washable liner keeps helmet clean, fresh, and odor free.Protect your child while cycling, skateboarding, roller skating.Specifications:Material: PC + EPSColor: Blue / Red / Yellow / Rose Red / Light Blue (optional)Head Circumference: 52 - 56cm / 20.5 - 22.0inWeight: Approx. 420g / 14.8ozPackage List:1 * Bike Helmet"