ACTON Sport Protection Gear Set Protective Outfit Helmet Elbow Knee Pad Glove Wrist Guard Set for Balanced Car Scooter for Street Outdoor Safe Roller Skating. The helmet shell is made of high-strength and impact-resistant ABS material. The inner liner is made of environmentally friendly EPS light-weight polymer material to protect the head. 11-hole plum-shaped ventilation design, refused to be stuffy. Elastic and adjustable buckle straps are designed for different head types. Out door or on the street, when you fall from the scooter to the solid ground, it may hurt you badly, now you need a ultimate protective outfit for help.