1、Integrated in-mold PC outshell with multi-dimensional cone-shape EPS impact foam, combine with safety and comfort. 2、Equipped with14 vents provides cooling wearing experience when you\u0027re riding hard. 3、Breathable, perspiration absorption and soft chinpad and Y-S fixing rope for comfort fit. 4、Visor attached protects your eye from rain, sun, mud, and tree branches. 5、Heads circumference adjustable for comfort wearing, suitable for head circumference 560-620mm. 6、Convenient and smooth buckle, quickly clasp on and take-off. 7、Application: mountain biking, scooter, trail Cycle, riding. Integrated in-mold PC outshell with multi-dimensional cone-shape EPS impact foam, combine with safety and comfort. Equipped with14 vents provides cooling wearing experience when you're riding hard. Breathable, perspiration absorption and soft chinpad and Y-S fixing rope for comfort fit. Can be used for Mountain biking, scooter, trail Cycle, riding. Features: Integrated in-mold PC outshell with multi-dimensional cone-shape EPS impact foam, combine with safety and comfort. Equipped with14 vents provides cooling wearing experience when you're riding hard. Breathable, perspiration absorption and soft chinpad and Y-S fixing rope for comfort fit. Visor attached protects your eye from rain, sun, mud, and tree branches. Head circumference adjustable for comfort wearing, suitable for head circumference 560-620mm. Convenient and smooth buckle, quickly clasp on and take-off. Application: mountain biking, scooter, trail Cycle, riding. Specifications: Name: Bike Helmet Model: F-659 Material: EPS+PC Color: white, red, green, blue, dark green, white+red, pink, black (optional) Headcircumference: 560-620mm / 22.05 * 24.41in Internal Diameter 180 * 220mm / 7.09 * 8.66in Package size: 320 * 280 * 220mm / 12.60 * 11.02 * 8.66in Package weight: 500g / 1.10lb Packing List: 1 * Bike Helmet 1 * Bike Helmet