CAIRBULL Y8960W MTB Road Ultralight Aerodynamics Sports Safety Helmet 30.0x22.5x17.0cm

"PC shell for great impact resistance, EPS foam for great buffer action. 17 intake and outlet air vents for comfortable wearing experience. This breathable and lightweight helmet will be a great guard to protect you from unexpected injury during riding, cycling, roller skating and other sports~ Feature: SUPER LIGHTWEIGHT: Only 0.5lb much more lightweight than a bottle of water, do not add any extra weight on your head. SUPERIOR MATERIAL: Integrated PC shell with great impact resistance and high density EPS foam with great buffer action, double protective shell ensures safe use both for adults and youth. AERODYNAMICS DESIGN: 17 intake and exhaust vents create a air circulation system to keep head cool and comfortable. ABSORBENT LINING: Superior lining for comfortable wearing experience and detachable for cleaning. ADJUSTABLE: Rotate the adjustor for proper tightness and head circumference is 21.2-23.6in, and adjust the strap on chin for comfortable and right wearing. PROTECTIVE: Protect your head from unexpected injury during rollerskating, cycling and other sports. Specification: Material: PC & EPS  Color: White / Black / Blue / Gold / Fluorescent green (optional) Head circumference: 54-60cm / 21.2-23.6in Air vent: 17 Weight: 250g / 0.5lb Package weight: 450g / 1.0lb Package List: 1 * Helmet "