Design and Details Natural movement meets nature. Feel connected to your world when you run or hike in the lightweight, TerraFlex Upgraded welded upper increases mid-foot flexibility, wicking mesh keeps your feet cool and dry, and an aggressive, lugged sole provides confident traction Bumps fade away thanks to 3mm of TrailFoam hiding inside of the patented FeelTrue sole Heel cinch and adjustable mid-foot webbing give you a secure and stable fit, while the wider toe box lets your toes splay and flex to empower your stride