Because barefoot trail running just isn't practical, Columbia offers the next best thing. Low-profile, lightweight, and incredible nimble, the minimal Columbia Master Fly is all about going farther, faster. The more you can feel the trail, the more quickly and easily you can navigate it. Keeping that in mind, they created the Columbia Master Fly, which combines barefoot agility with essential protection. A closed mesh upper features welded seams and a Techlite® tongue for lightweight support and comfort. The Techlite midsole is designed with an off-set heel for a low-profile ride, while a forefoot nylon rock guard shields feet from sticks and stones. Underfoot, an Omni-Grip® rubber outsole boasts strategically placed traction lugs to keep you steady in all kinds of trail conditions.