●★Impact resistance&Light weight:Outter material is tough and durable PVC & PC, inner material is EPS foam which help absorb the impact and protect the head during crash. The helmet is made of lightweight material, it weights only 200g. ●★Adjustable dimension:This helmet is specially designed for adults both men and women rider. Its suitable for 22~25 head circumference. It goes with a standard size, equipped with the easy-use dial system and side straps make this helmet adjustable to different head size. ●★Aerodynamic and ventilation design: The ventilation holes allow air to go through the cycle helmet,helping increase the speed and keep stay cool. ●★Visor design:The special design of visor,you can enjoy cycling even in hot days,and the visor can be removed when you do not need it. ●★The inner pads and chin pad are made of breathable material, soft and comfortable.They can be easily removed for wash and can be easily attached back to the helmet.