Now, the upper incorporates patches of softer airy engineered mesh to boost breathability in key areas, while the forefoot is reinforced for improved durability (where most runners saw blowouts in the original version). Perched atop Nike’s premiere ZoomX foam is a stiff carbon-fiber plate that runs from heel to toe, so you’ll feel a propulsive spring with each step. It picks up right where the original left off with a few fit refinements to the upper and keeps the loaded midsole unchanged as the star of the shoe. The Vaporfly saga continues with a much-awaited sequel to one of the fastest shoes we’ve ever tested. Some testers noted a sloppy fit with bunching around the collar and heel.BEST FOR LONG RUNS- ZoomX Invincible Run Flyknit “The midsole is ample yet stiff-which lends the shoe a quick turnover-and flares out noticeably under the heel, providing a wide platform and confidence on every landing.”

The second time I took the pair out, on a flat gravel-and-dirt stretch, I set a new mile PR by a good 10 seconds,” one tester said.

Plus, Nike updated the outsole with new multi-directional rubber lugs that provide better grip our testers who ran in the Terra Kiger 6 previously noted the 7 has improved traction on slick rocks. A Zoom Air unit beneath the forefoot provides enough firm cushioning to keep you comfortable for hours on the trail, while a protective plate at the heel shields your foot from sharp rocks and roots. When conditions get sloppy, the Terra Kiger will help you find sure footing on all kinds of terrain, from muddy singletrack to gravel to fresh snow.

Some testers noted early wear on forefoot lugs.

New outsole improves grip, but overall still better suited to dry terrain.

Nike run swift wide