With an external TPU heel counter and EVA medial post, Topo Athleric Ultrafly 3 running shoe offers rear-foot stability and light pronation resistance. The cushioned 2-density ZipFoam midsole delivers more long-term resilience and a higher rebound compared to traditional EVA. The engineered mesh upper provides a seamless and breathable fit, while a molded foam collar and Ortholite footbed offer additional comfort. Ultrafly 3 men's running footwear is a perfect daily trainer for those seeking a moderately cushioned ride with light guidance. Topo Athletic delivers a natural fit and gimmick-free design that encourages instinctive and natural movement. Topo's unique fit and feel is delivered with 3 key elements that encourage natural foot biomechanics while still offering cushioning and protection. Lightweight: Ultralight materials and seam-reducing construction techniques keep weight down and blisters at bay. Roomy Toe Box: Plenty of room for the toes to spread and splay. A secure fit through the heel and midfoot allows the shoe to move with your body. Low Drop:Topo cushioned midsoles are engineered with a 0 to 5mm heel-to-toe drop, encouraging natural loading and foot motion during the gait cycle.