【Certified Bicycle Helmet】Gudook led bike helmet, meets the CPSC(American National Standard) and CE(European Standard) certifications, Integrated molding made of High-density EPS buffer layer inner shell and thickened PC outer shell, lightweight and durable, shock absorption, high impact resistance, provides higher safety performance

【Front And Rear LED Light Helmet】The bicycle helmet with USB-C charging LED front and rear lights, a headlight that can light up ahead, and a taillight that lets others recognize your direction, which has 4 light modes and can be switched freely, provide max visibility and safety while night cycling

【Somfortable cycling helmet】The scooter helmets for men, with a 14-hole scientific design ventilation system to enhance the air circulation inside the helmet. thickened inner lining and head fully cushioned, more comfortable to wear, and can be disassembled and cleaned

【Skate & Bike Helmet】 The cycling helmet with light, designed for European and American men and women’s riders, for Ideal for urban commuting city road mountain biking, enduro and off-road, roller skating, electric scooter, skateboarding, etc

【Adjustable Helmet】This bike helmets for men with light, is fully adjustable to fit, provided by the adjustment dial, and can accommodate heads of all sizes, Suitable for 12+ most teens and adults, the Suggested head circumference: (M) 21.26-22.83 inches, (L) 22.83-24 inches (Please measure your head circumference before buying.)