Crazy Mars Multi-sports Kids Safty Helmet Child Balance Car Protective Gear Cycling Skating Roller Skating Skateboard Bike Bicycle Helmets for Toddlers Materials: The shell is made by durable and strong PVC plastic,the imported EPS foam.They can maximumly relieve the forces of head-butting,play a good role in protecting our heads. Air-Holes: 11 vents in the top,front and back,they are in the sscientific and reasonable place,easily to sweep out the hot air and bring the cool air in, provide a comfortable and safe sports experience,good heat dissipation and ventilation effect. 188g,ultralight,durable and ventilated,there are 3 pieces of removal thick pad in the top,front and back head position,without any stress feeling,really comfortable to wear,easy to wash. The bright happy colors with cute,brave,and cool pattern designs,can let your child full of courage and energe,develop love for nature,passion for sports and awareness to take an active part in physical exercise. What you wear is not only a helmet,but also safty and culture,the helmet fully demonstrated the vigorous, upward and positive character,Suitable for child's bike cycling,motorcycling,climbig,skating,roller-skating and ball games.