| Unit | Sizes | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| US & Canada | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 13 | 14 | 15 | 16 |
| UK | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12.5 | 13.5 | 14.5 | 15.5 |
| Europe | 39 | 39 | 40 | 40-41 | 41 | 41-42 | 42 | 42-43 | 43 | 43-44 | 44 | 44-45 | 45 | 46 | 47 | 48 | 49 |
| Inches | 9.3 | 9.5 | 9.6 | 9.8 | 9.9 | 10.1 | 10.3 | 10.4 | 10.6 | 10.8 | 10.9 | 11.1 | 11.3 | 11.6 | 11.9 | 12.2 | 12.5 |
| Centimeters | 23.5 | 24.1 | 24.4 | 24.8 | 25.4 | 25.7 | 26 | 26.7 | 27 | 27.3 | 27.9 | 28.3 | 28.6 | 29.4 | 30.2 | 31 | 31.8 |
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.

