Indoor SPD cycling shoe with a comfortable fit and maximum breathability. Technologies Shimano Dynalast - The toe-spring section of a cycling shoe plays a key role in supporting efficient pedaling. Too high, and it causes increased tension in the plantar, calf, and hamstring muscles. Too low, and you get a bowlegged, inefficient pedaling form. Extensive research by Shimano’s R&D experts has produced a superior shoe last design with an optimised toe-spring section that promotes a smoother, more energy-efficient upstroke. Built based on feedback from pro riders, Shimano Dynalast helps reduce energy loss on long rides, letting you keep more in the tank for that final sprint to the line. Shimano Pedaling Dynamics - SPD is a system that performs whether you’re on or off the bike. It makes pedaling more efficient with a wide variety of shoe and pedal styles and the recess cleat makes walking more comfortable. You can pedal with greater efficiency, stability and comfort with the SPD system. Features Breathable, comfortable sock mesh upper designed for hard workouts Quick-fastening instep cross strap securely holds feet in place Stable rubber sole enhances walking comfort Full-length reinforced plate provides stable power transfer Mixing of Dynalast and Dynalast Women’s sizing for easily finding the suitable fit Specifications Cleat Type Last Type Stiffness Best Match Pedal Closure Material Standard Insole Weight SPD Mix last of Shimano Dynalast / Dynalast Women’s 5 PD-ED500/PD-M520 Cross strap Upper: Synthetic leather + Mesh Outsole: Rubber Midsole: Glass fiber reinforced nylon Flat Insole Men’s Actual Weight: 275g (Size 42)