This bike helmet is integrally molded from the hard polycarbonate shell and shock-absorbing foam to provide ultimate protection 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.