FEATURES of the Pearl Izumi Women’s Tri Fly IV Shoe 1:1 Anatomic TRI Closure: Eliminates hot spots and removes pressure from your instep Fully lined mesh upper for bare foot comfort 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 Women’s Tri Fly IV Shoe Weight: 245 g