Features:<br> In-mold construction: Polycarbonate hard shell and EPS foam absorb external shocks and impacts to give your head maximum protection.<br> Durable and Lightweight: The use of molded technology, combined with a thick EPS foam core and a polycarbonate shell, ensures better shock absorption and provides you with the best protection on road bikes or mountain bikes. Ultra-lightweight, weighing only 250g<br> Adjustable: Rotary dial on the back is fully adjustable to fit 55-63cm head circumference. Side straps ensure a snug yet comfortable fit.<br> Good ventilation: 26 big air vents help increase airflow to keep your head cool while reducing the weight of the helmet and wind friction to seek for faster riding speed.<br> Removable inner lining: Sophisticated crafted inner lining, effective anti-insect. Covers a large area, fits closely to the inside of the helmet, and has a good cushioning effect<br> Specification:<br> Material: EPS + PC+ nylon webbing + pp<br> Vent qty: 26 vents<br> Head circumference: 55-63cm<br> Head width: 18cm<br> Weight: 250g<br> Applicable gender: neutral/male and female<br> Color: red and black, green and black, yellow and black, blue and black<br> Package List:<br> 1 x Cycling Helmet