Pearl Izumi Men's EM Tri N1 v2 Running Shoe 100% Textile and Synthetic Imported Rubber sole Triathlon running shoe designed for long distance running and featuring sock-like 3-D Seamless Print upper technology and 1:1 Energy Foam forefoot cushioning Dynamic heel-to-toe offset: 1 mm at initial contact to 4.5 mm at mid-stance E:Motion midsole Supportive synthetic overlays