Drawing inspiration from Nike's home state of Oregon and the vast wilderness and climate, the ACG Mountain Fly is a fast, rugged shoe. The updated, low-profile silhouette arrives in all-black with a lightweight upper and a sticky rubber outsole to stand up to some of the toughest terrains. In fact, the sneakers were tested in Oregon's rock-climbing playground Smith Rock and near Crater Lake to connect with the environment and learn how the shoes would react. Each pair includes plush React foam with Vaporfly technology for added comfort and energy return. The ACG Mountain Fly's are finished with reflective laces and additional webbing at the eyestays for a secure fit.