The Nepal Cube GTX is a warm and technical mountaineering boot designed to provide a lightweight yet robust boot to tackle big peaks, mixed terrain, glacier travel and vertical ice. Offering features like the carbon tech honeycomb insole, an insulated comfort Gore-Tex® membrane and a removable and adjustable tongue, the Nepal Cubes provides a secure and precise fit to optimize your objective. • Highly insulating Carbon Tech honeycomb insole is lightweight, stiff and low profile • Insulated Comfort Gore-Tex® membrane provides waterproof breathability coupled with insulation • Innovative 3D Flex™ ankle • Removable and adjustable variable fit tongue • Ideal terrain: Winter mountaineering, ice climbing, mixed climbing SIZES: 38 - 48 (half sizes) WEIGHT: 31.50 oz (894g) LAST: Nepal UPPER: 3.2mm silicone impregnated Idro-Perwanger Roughout Leather with high-abrasion resistant fabric / Air-injected rubber rands LINING: Gore-Tex® Insulated Comfort Footwear INSOLE: 3mm Carbon Tech honeycomb insulation / 4mm EVA MIDSOLE: 3 mm Polyurethane graded for crampon attachment SOLE: Vibram® Matterhorn with Impact Brake System™