Pearl iZUMi Men's Race Road II Cycling Shoe 100% Leather and mesh Synthetic sole SELECT 1:1 Power Plate: SELECT Grade Nylon and Composite Fiber plate for lightweight stiffness and durability; Direct-Vent technology for cooling and drainage; concave shaping for ultra low 7.0mm stack height, enhanced plate stiffness and anatomic support 1:1 Anatomic Buckle Closure: closure follows the natural anatomic shape of the foot to eliminate hot spots and remove pressure from your instep; and an adjustable buckle mounting plate that delivers ultimate fit and flexibility (patent pending). SELECT Insole: provides excellent Longitudinal and Transverse Arch Support. SELECT 1:1 Heel Cup: integrated Molded Power Band for benchmark heel hold and power transfer.