Power Grips provide a hands-free, easy exit way to increased power for all levels of mountain bike, road and recumbent riders. No special shoes required. The Power Grips Pedal strap set easily attaches to your existing pedals. Fits most metal cage pedals that accept standard toe clips and straps. Comes with all necessary hardware. Includes our micro-adjustable bracket which easily adjusts to fit different shoe sizes with a standard 4mm allen wrench. Measure the circumference of your shoe at the widest point, if this measurement is more than 12" you need the XL Strap Set.