Altra Men's Olympus Running Shoes 100% Manmade Imported Synthetic sole Heel measures approximately 1.5" Platform measures approximately 1" Trail running shoe in quick-dry mesh featuring natural foot design and logo emblems at side, heel, and tongue 0-mm heel-to-toe drop to encourage natural stride Natural Ride System to assist in proper foot mechanics Dual-layer EVA midsole with A-Bound for underfoot protection StoneGuard rock plate Trail-specific sticky rubber outsole for multidirectional traction