Pearl iZUMi Men's X-ALP Drift IV-M Cycling Shoe Upper: 60% Rubber/Plastic/38% Textile/2% Steel Ring; Sole: 40% Rubber/35% Ethylene Vinyl Acetate/23% Nylon Plastic/2% Steel. Imported Synthetic sole Quick lacing closure system gives secure foot in all conditions, barefoot construction for a comfortable fit with or without socks Fiberglass injected composite plate for efficient power transfer Highly breathable mesh/synthetic upper delivers comfort and breathability Eva foam run shoe midsole for off the bike cushioning and comfort Carbon rubber lugged outsole for superior traction and durability, spd compatible