Simple saddle installation, just remove your current stirrups and slip your new aluminum swivel and lock stirrups on. This system allows the stirrup to rotate 360 degrees or it can be locked into any postition for maximum comfort. It also allows the fender to lay flat against the riders knee. Guaranteed to relieve knee and ankle strain. Complete with aluminum stirrup with wrapped leather bottom and 2 1/4 rubber tread. Choose 2 1/2 or 3 neck. Silver or Brown.