Pearl iZUMi Men's E:Motion Road N 2 Running Shoe 100% Synthetic Imported Rubber sole Weight: 9.3 oz/263g High-mileage neutral trainer High-rebound, smooth Dynamic Offset technology 4mm heel-to-toe differential Shock-absorbing and energy-return foam midsole Cushioned level 2 midsole Lugged outsole for traction and durability Seamless upper Deeply cupped heel