Nike Zoom Fly 4 running shoe in13M

The Nike Zoom Fly 4 is the training version of the Vaporfly Next% 2 and it delivers a similar forward-tipping sensation with every toe-off. It has a higher level of durability but it doesn't feel as bouncy or as soft as the Vaporfly. Version 4 is only an upper update but don't let that fool you; the Zoom Fly 4 is a vast improvement over the Zoom Fly 3 in terms of comfort and performance. Summit White, Imperial Blue & Lime Glow colorway