features detachable magnetic goggles to protect your eyes from wind, sand and sun. The 9 vents bring you cooling experience during cycling. The helmet is a great equipment for anyone who loves cycling and other outdoor sports. Features: Impact-resistant polycarbonate shell with shock-absorbing EPS foam. Detachable magnetic goggles protect your eyes from wind, sand, and sun rays. 9 big air vents keep your head cool and reduce wind resistance for faster riding speed. Rotary dial is adjustable to fit 22.0 - 22.8 head circumference. Adjustable side straps ensure a comfortable, snug fit. Soft lining pads wick moisture away for added comfort, detachable and washable.