Story Lightweight, all-weather trail running shoe Whether you’re a seasoned ultra-marathoner or new to the trail running game, these technical trail shoes were built to hold up to any kind of weather and any kind of terrain. The Tempesta GTX is a lightweight trainer with waterproof materials, like an all-weather strobel board and comfy mesh uppers. Ultra-grippy traction gives extreme stability in technical trail conditions, and the single pull lacing system keeps your feet snug and slip-free. Features Waterproof design to hold up against the elements Single pull lacing system for quick and easy closure Durable AirMesh uppers to ward off the elements Specs Weight 11.30 oz Last Tempo 2 Ergo Materials Upper AirMesh / 4-way stretch dynamic scree guard Lining Gore-Tex® Extended Comfort / Gore-FLEX® Midsole Injection molded EVA / TPU stabilizer Sole FriXion® AT V-Groove™ with Impact Brake System™ Drop 10mm Sizing La Sportiva uses European sizing standards, compare your normal US shoe size to the chart below to find your La Sportiva size La Sportiva Size US Size 41 8.5 41.5 8.5+ 42 9 42.5 9.5 43 10 43.5 10.5 44 10.5+ 44.5 11 45 11.5 45.5 12 46 12.5 47 13