Brand: 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): 22x17 Whether integrated: carbon fiber split/imitation Helmet stomata number: 21 Product matching: hat brim Product size (CM): 28x21x13.5 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: 1xhelmet