Aeike Bicycle Helmet for Adults Lightweight Cycle Bike Helmet with LED Light for Mountain Biking Riding Scooter Skating Outdoor Sport Safety Helmet This bike helmet is integrally molded from the hard polycarbonate shell and shock-absorbing foam to provide ultimate conservation for user's head. With adjustable rear dial and side webbing straps, the helmet provide a customized fit for different users. It is designed with 25 air vents to keep you cool,  LED taillight to keep you visible and safe at night, removable lining to keep you comfortable, and the removable visor to shade your eyes from the sun. This helmet is a great choice not just for bike riding, but also for scooter riding, skating, skateboarding, and other sports activities. Features: In-mold Construction: Hard polycarbonate shell and EPS foam absorb impact to maximize the conservation. Attach the removable visor to the helmet to protect your eyes from the sun. Adjustable System: The rear dial and side straps are adjustable to provide a comfortable fit for different riders in head circumference: 58-62cm, suitable for both men and women. Exceptional Ventilation: The helmet is designed with 25 air vents to take in cool air and exhaust hot air, keeping rider's head cool and dry. LED Tail Light: The LED taillight is designed on the rear dial for increased visibility and safety at night. It is easy to switch the modes with a simple press of button: Cyclic flash - All flash - All steady. Removable Lining: The soft lining provides optimal cushioning and comfort for your head, breathable and moisture-wicking. It is removable and washable. Widely Used: The helmet is lightweight, great safety equipment for mountain biking, road biking, scooter riding, inline roller skating, skateboarding, and other outdoor sports. Package List: Material: Polycarbonate + EPS Taillight Modes: Cyclic flash - All flash - All steady Color: Black / Black & White / Yellow & Green (optional) Air Vents: 25 Head Circumference: 58-62cm / 22.8-24.4in Inside Size: Approx. 22.5 * 18.2cm / 8.8 * 7.2in Weight: Approx. 265g / 9.3oz Package Size: 27.5 * 23.8 * 18cm / 10.8 * 9.4 * 7.1in Package Weight: 515g / 1.1lb Package List: 1 * Bike Helmet 1 * Visor