Pearl iZUMi Women's All-Road Cycling Shoe 100% Synthetic Synthetic sole SELECT 1:1 Power Plate: SELECT grade nylon and composite fiber plate for lightweight stiffness and durability 1:1 Anatomic Closure: follows the natural anatomic shape of the foot to eliminate hot spots and remove pressure from your instep SELECT Heel Cup: with integrated Molded Power Band for benchmark heel hold and power transfer SELECT Insole provides excellent longitudinal and transverse arch support Compatible with SPD and all Look pedal systems