Pearl iZUMi Men's E:Motion Road N 1 Running Shoe 100% Synthetic Imported Rubber sole Weight: 8.2 oz/232g High-rebound, smooth Dynamic Offset technology 1mm heel-to-toe differential Shock-absorbing and energy-return foam midsole Minimal level 1 midsole Strategically placed rubber pads in outsole to boost traction and durability Seamless upper Deeply cupped heel