: Neutral Color: black and white, black and blue, black and red, black and yellow, red, silver, blue, black powder, black and green Material: EPS foam PC shell Applicable head circumference (CM): 54-62 Helmet inner size (CM): 22*17 Whether integrated: carbon fiber split/imitation Helmet stomata number: 21 Product matching: hat brim Product size (CM): 28*21*13.5 Product weight (G): 180 Specifications: 1. Powerful protection: outer shell of the helmet is made of ultra-light PC plastic, which meets American safety standards. The inner lining material is high-quality EPS foam, which can absorb impact well and provide more protection for cyclists. 2. Ventilation and ventilation, in line with aerodynamics: professional aerodynamics and ventilation design, 21 vents, let air through the helmet, help increase speed and keep cool. 3. Lightweight and comfortable, light weight and no burden: This helmet is made of lightweight materials to keep the weight to a minimum without sacrificing the safety of comfortable wear. 4. Humanized design: This adult helmet adopts standard size, the head circumference can be adjusted to the best; the detachable sun visor can block ultraviolet rays and reduce glare and wind resistance. 5. Multi-color options: The helmet has a variety of colors to choose from, with bright colors, smooth appearance, and good gifts! Package Included: 1*helmet