SUNVP Kids Bike Helmet Sets Bicycle Scooter Helmet Safety Protective Set Gear for for Roller BMX Skateboard Hoverboard and Other Extreme Sports Activities (7 Pieces)

Material: PC+EPS One Mold Design, 200g Super Lightweight and Durable. EPS foam can keep warm, cold-resistant, water-resistant, fireproof and super-tolerance.
Size: This helmet is one size for head circumference within 24.02″. Adjustable regulator can help you to find a correct wear position.
12 Air vents keep your head cool even. Velvet lining is soft and comfortable, so this bike helmet also suit for deep autumn and winter outdoor roller skating.