Details Boreal Arwa Mountaineering Boot The Arwa mountaineering boot from Boreal is a very lightweight boot designed for technical climbing in cold conditions. It's fully lined with layers of Thinsulate, even right underneath the foot, with an XTP (Extreme Thermal Protection) footbed made from a combination of a highly isolative felt material and a memory foam layer for superb underfoot comfort. The Bi-Flex system allows free ankle movement for better comfort while walking and precision while climbing. A carbon composite midsole adds rigidity, with front and rear welts for compatibility with technical C3 crampons Weight: 1480g (per pair size 7) Very lightweight mountaineering boot for technical climbing in very cold conditions Bi-Flex system and HFS padded heel system for a perfect fit Integrated gaiter XTP footbed made from a combination of a highly isolative felt material and a memory foam layer PVC rand for protection UPPERS: Highly abrasion resistantant, waterproof and reinforced Putek mesh. PVC overlay for added lateral support LINING: Boreal Dry-Line® for absolute waterproofness and superior breathability Full internal single layer Thinsulate® lining for thermal protection MIDSOLE: Boreal PBG-650 with lateral reinforcements for torsion control. Unique triple layer Thinsulate® thermal protection SOLE: Vibram New Mulaz outsole with dual density, shock absorbing PU and EVA under the heel for comfort. TPU front and heel piece for automatic crampons. Stabilizer TPU piece in metatarsal zone Specifications Arwa Mountaineering Boot