Securely holds any helmet to a passenger seat, and is available in two sizes: large works with full face helmets, small for half helmets. Uses an adjustable heavy-duty, anti-slip seat strap with rugged plastic seat clips that fits the bottom edge of most seats, or a 36" universal strap to wrap completely around the seat. The bra itself is stretched over the helmet placing the straps through two slides mounted on the seat strap, with a safety clip included to attach to the helmet D-ring for added safety. All straps are 1.5" wide. Instructions included. Black.