Pearl iZUMi Women's Select Road Cycling Shoe 100% Synthetic leather and mesh Synthetic sole SELECT 1:1 Power Plate: SELECT Grade Nylon and Composite fiber plate for light stiffness and durability 1:1 Anatomic Buckle Closure: follows the natural anatomic shape of the foot to eliminate hot spots and remove pressure from your instep (Patent Pending) SELECT 1:1 Heel Cup: with integrated Molded Power Band for benchmark heel hold and power transfer