Pearl iZUMi Men's Select RD IV-M Cycling Shoe Upper: 68% Rubber/Plastic/30% Textile/2% Steel Ring; Sole: 2% Rubber/3% Ethylene Vinyl Acetate/92% Nylon Plastic/3% Steel 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 Eva foam and rubber heel bumper gives stability and walking comfort Select insole: provides excellent longitudinal and transverse arch support Spd compatible