FEATURES of the Pearl Izumi Men’s Select RD III Shoe 1:1 Anatomic Closure: Eliminates hot spots and removes pressure from your instep 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 mm stack height, enhanced plate stiffness and anatomic support Built-in Longitudinal Arch Support for optimal support, power, and efficiency EVA foam and Rubber heel bumper gives stability and walking comfort Select Insole provides excellent Longitudinal and Transverse Arch Support SPD Compatible SPECIFICATIONS of the Pearl Izumi Men’s Select RD III Shoe Weight: 268 g