Description: - 【Premium Material】: This bike helmet is made of thickened EPS foam and PC material, which has great impact and shock absorption protection, and better cushioning effect. - 【Ventilation】: The helmet designed with multi ventilation holes helps air circulation to wear the bike helmet easily and keep your head cooling. - 【Adjustable】: Cycling helmet is suitable for people with head circumference 55cm-61cm/21.65inch-24.02inch, with adjustable strap and chin pad. Can be used by both men and women. - 【Comfortable to Wear】: Mountain bike helmet, detachable comfortable lining, easy to clean, lightweight helmet, long term wearing will not feel heavy and tiring, comfortable to wear. - 【Wide Application】: Adjustable cycling helmet is very suitable for outdoor travel, cycling, biking, skateboarding and other outdoor activities sports, also a great gift choice for outdoor lovers. Specification: - Material: PC, EPS Size Chart: Applicable Head Circumference: 55cm-61cm/21.65inch-24.02inch Package Includes: 1 Bike Helmet Note: Please allow slightly errors 1-2cm differences due to manual measurement.