Get out mesh the world’s trails with the latest retail from Nike ACG, the Mountain Fly GORE-TEX. It’s built to thrive, no matter what Mother Nature puts in your way, thanks to a waterproof GORE-TEX upper, debris-shielding bootie and tech-filled sole unit. There’s React foam for cushioning, a full-length carbon fibre plate — borrowed from the Vaporfly 4% for stability — and a lugged rubber sole for grip.