Furiosa SD GTX Women's Mountaineering AKU ELICA TECHNOLOGYELICA Technology ensures Color:Ranger Green AKU ELICA TECHNOLOGYELICA Technology ensures an anatomical fit to provide better stability and weight distribution across your boot sole to reduce pressure points and encourage better hiking form Model approved by the UK military across their services nitrogen injected foam delivers spring like cushioning and energy return that won't pack out over long days TPU Stability Heel Wrap: An external TPU wrap locks the heel in place on steep climbs and adds lateral support for off camber traverses and side hilling — mountain grade stability without mountain boot bulk