Ships From Hong Kong. Style: red smooth surface . Helmet is made by advanced ABS plastic shell, plastic foam, polystyrene ethylene, talc and calcium stearate. Foam helmet has holes for ventilation, shock absorption cushioning lining, reducing vibration fully secure the head, compression and strong. The cushion material: advanced senior double-sided velvet lining. size can be tone, you can prevent the bumps scratches, prevent head injury. Helmet Features: high density foam, good hardness, light weight, unique, air permeability is well, compressive ability is strong. Size: 6.69"*10.43"*8.66". L size: head circumference of 58-60CM. Style: red smooth surface. Applicable people: fans of outdoor sports. Helmet is made of advanced ABS plastic shell, plastic foam, polystyrene ethylene, talc and calcium stearate. It's lightweight or comfortable for adults to protect effectively the head and reduce the heavy pressure on the head. To reduce vibration. Helmet Features: High density foam, good hardness, light weight, unique, good air permeability, strong under pressure rashworthiness, deformation, will not cause pressure on the head and neck, the effective protection The helmet is absorbent and breathable. Inner shell is made of EPS high density foam. Endurance and protection is strong. Soft and comfortable. Applicable sports: roller skating, skateboarding, cycling, BMX. You can prevent the bumps scratches, prevent joint injuries due to severe vibration and effectively preventing dislocation.