SpecificationBrand :KuYou Material :Multi-impact ABS Shell +EPS foam Liner Size:Head circumference:48-58cm ;Head width :16cm Net weight:0.28 kg, CE:Euro CE EN1078,Application: BMX,Skateboard,Skidding,Bicycle,Cycling and other outdoor sports. Color:Yellow/Pink/Green/Red.Features: Fully Adjustable Quick-Release Chin-Strap and spin dial (which is removable)Design to help reduce the risk injuryComfortable and Easy to wearDesigned for All Types of Skating, Skateboarding and Cycling.Extended Rear Coverage to Protect Against Backward Falls. 14 Vents Designed to Force Cool Air In and Warm Air Out. Strong Protective ABS Outer Shell. Lightweight, Energy Absorbing EPS Lining Includes Extra Interior Pads for Custom Fitting. Conforms Adjustable Safety Standard EN1078. Warranty Please do not hesitate to contact us if you are not satisfied for any reason. Our products are backed by 18 months Warranty.