Pearl Izumi Men's X-Alp Seek VI Cycling Shoe 60% Synthetic Leather/40% Nylon Mesh Imported Synthetic sole Low-cut construction for a light, fast fit and feel. Composite fiber injected nylon plate for efficient power transfer Eva x-alp outsole/midsole for off-the-bike cushioning and comfort and on-the-bike power transfer Carbon rubber lugged outsole for superior traction and durability. Spd-Compatible 1:1 energy foam technology in heel crash pad for ultimate cushioning when off the bike