Schwinn Urban Adult Microshell 12 flow vents keep your head cool dial-fit retention system for comfortable on the fly adjustments side straps adjusters to assist in proper fit Snap on visor for protection from the elements Large sealed pads for comfort and durability Dial fit offers 100% adjustability for larger or smallerheads Side strap adjusters assist with a proper fit 12 flow vents keep you cool Large sealed pads for optimal comfort Removable visor for protection from the elements