Pearl iZUMi Women's W Select RD IV-W Cycling Shoe Upper: 68% Rubber/30% Textile/2% Steel; Sole: 92% Nylon Plastic/3% Steel/3% Ethylene Vinyl Acetate/2% Rubber Imported Synthetic sole 1:1 Anatomic Closure: eliminates hot spots and removes pressure from your instep SELECT 1:1 Power Plate: Composite Fiber plate for lightweight stiffness and durability; Direct-Vent technology for cooling and drainage Women's specific fit has reduced volume and narrower heel, SPD Compatible Ethylene vinyl acetate foam and Rubber heel bumper gives stability and walking comfort SELECT Insole: provides excellent Longitudinal and Transverse Arch Support