Inov-8 Men's Terraclaw 250 Trail Runner 100% Synthetic and Textile Imported Rubber sole For mild to moderately technical trails The dual-c sticky rubber outsole compound of hard and sticky rubbers grasp even slick rock while the multi-directional lug pattern allows for debris release The 8mm drop and 16mm/8mm stack heights offer more underfoot for longer miles training or even racing A double layered, lightweight toe cap, welded overlay that wraps the forefoot and a diagonally sewn tongue that defends against debris work together to protect the foot