Road Bike Helmet For Adults, Mountain Bike Helmet For Men And Women With COMPLIANCE- Complies with U.S. Consumer Product Safety Commission Safety Standard for Bicycle Helmets for Persons Age 5 and Older. Durable polycarbonate outer shell and High-density EPS foam protect your head of the crash. Adjustable Rear Dial Chin Straps, adjust to fit for different sizes. 2 Sizes for choice, M:54-58cm (21.2-22.8 inch), suitable for youth, boys girls. L:58-61cm (22.8-24.0 inch), suitable for adult, men, women. Design with 23 air vents keep you cool during long-term cycling ride. The breathable inner pads with insect net in front of cycling helmet which can be removed, wash to keep clean. 2 different color (black/white) visors to collocation. The removable visor reduces glare and helps shade sunshine. Package Included: 1*biking helmet, 2* removable visor, 1*carrying bag. Great gift for mountain cycling, road biking.