Part of Mammut's light hiking range, the Mercury IV Mid GTX Hiking Boot provides great all-round protection in changeable weather conditions. It features a durable and stable upper constructed from a blend of terracare nubuck leather and softshell fabrics, built around a waterproof and breathable GORE-TEX membrane. The 360 Memo Foam in the lining and footbed molds to your foot for comfort, while the smooth-running Polyamide (PA) webbing laces ensure easy on and off. The board-lasted Vibram Frog Grip outsole is designed with hexagonal studs for excellent grip, working with the patented Rolling Concept sole to encourage natural movement and reduce fatigue. Liquid Rubber reinforcements protect against abrasion and damage. Board lasted. Last index: Hiking. Flex index: A5. Weight (UK 8.5): 540g.