I have ultrafly 4s and they must have a longer toe, because I am a 10.5 or a mens 9 and these are just the tiniest bit too short. If I was a sensory princess they might be fine. But these are definitely better for a big 9.5 or a smaller 10. See photos for condition. I purchased these used and have not worn them outside the house. They appear to have gotten light, casual use. Ultrafly 3 delivers a smooth and comfortable ride with light guidance for daily training. Mderately cushioned platform features a 2-density midsole with ZipFoam. External TPU heel counter and EVA medial post offer rear-foot stability and light pronation resistance. Engineered mesh upper provides a seamless and breathable fit Molded foam collar and Ortholite footbed offer additional comfort Best For: Road Running Stack Height: 28mm (heel) // 23mm (forefoot) Heel to Toe Drop: 5MM Weight: 7.7oz (W7) Style #: W038-Black