Pearl Izumi Men's X-Alp Enduro IV Cycling Shoe 80% Synthetic Leather/20% Nylon Mesh Imported Synthetic sole 1:1 anatomical buckle closure system reduces hot spots and removes pressure from your instep. SPD-compatible Low cut construction for a light, fast fit and feel. Flexible forefoot and a running shoe beveled heel Composite fiber injected nylon plate for efficient power transfer Ethylene vinyl acetate foam run shoe midsole for off the bike cushioning and comfort Carbon rubber lugged outsole for superior traction and durability