SAFE AND RELIABLE: DOT safety standards.Material: ABS shell+high density EPS buffer layer+Non-woven composite sponge lining.It has a amount of padding and protectionSNUG AND COMFORTABLE: Very comfortable and not too heavy for the.It is gifts or present for your and Grandchildren on Christmas Day, New Year, BirthdayMULTIPLE AIR VENTS DESIGN: Multiple air vents around the helmet to maximize air circulation, make fresh air keep entering the helmet, The optimized vent reduces the wind noise and can ride more quietlySIZE CHART:(cm) Small: 49-50Inches: 19.28''-19.68''PACKAGE INCLUDED: Youth Helmets+Gloves+Goggles+Portable Bag 1 Helmet for Go-Kart 2 Helmet for Dirt Bike 3 Youth Helmet for ATV 4 Helmet for Motocross 5 Helmet for UTV 1 Helmet for Go-Kart 2 Helmet for Dirt Bike 3 Youth Helmet for ATV 4 Helmet for Motocross 5 Helmet for UTV MORE DETAIL OF YOUTH HELMET 1, Meets FMVSS 218 Certificated, children safe parents rest assured. 2, Light weight and comfortable with hard ABS shell, non-deformation and crashworthiness of the end structure. 3, Aerodynamic designed helmet to reduce wind drag for speeding up, and peak design to block sun & flying mud. HOW TO TRY ON THE HELMET YOUTH HELMET SIZE CHART