Adjustable: The bike helmet for men and women is designed with adjustable chin strap, head circumference adjustable by turning the dial on the back of the helmet. High Quality Material: This fashion bicycle helmet is made of PC and material, integrated design, with great impact and shock absorbing protection, and better cushioning. Feature: Lightweight, breathable and comfortable design, effectively reduces wind resistance and lets you keep comfortable and cool in riding. won't tire you at all and fits for city riding, road, and mountain bike cycling. Ventilation Comfortable Wearing: This cycling helmet is streamlined structured, with breathable vents, lightweight, keeping you cool and drying, long time comfortable wearing. Wide Applications: This stylish bicycle helmet is widely suitable for outdoor travel, cycling, biking, bicycling, skateboarding, etc. Besides, it is also a great gift choice for outdoor lovers.