Designed to provide your feet with advanced stability and support so you can get the most out of your next trail adventure. Swiftwick FLITE XT® TRAIL features AnkleLock™ Technology that supports your ankles during quick movements on uneven & varying terrains, while GripDry™ Fiber in the heel and forefoot keeps your feet from sliding in your shoes. But, we didn't stop there - we blended natural Merino wool with a full Olefin fiber footbed to move moisture away from your feet, keeping them dry and blister-free even during the longest of treks.