Please click for the La Sportiva Size Conversion. The lightweight yet incredibly durable La Sportiva Nepal Cube GTX mountaineering boot offers superior performance on mixed terrain, rocky peaks, glacier travel, and vertical ice. 3.2mm silicone impregnated Idro-Perwanger Roughout Leather upper with high-abrasion resistant fabric. Ideal terrain: Winter mountaineering, ice climbing, mixed climbing. GORE-TEX Insulated Comfort Footwear lining makes the boot completely waterproof and warmer for high altitudes and extreme cold. Removable and adjustable tongue is breathable for better moisture management. Innovative 3D Flex ankle-hinge system provides plenty of support when straight on front pointing yet remains flexible from side to side when flat footed in French style. Highly insulating 3mm Carbon Tech honeycomb insole is lightweight, stiff, low profile and features 4mm EVA support. Air-injected rubber rand. Cushioned EVA midsole 3 mm polyurethane-graded for crampon attachment. Durable Vibram Matterhorn outsole with Impact Brake System, where the lugs of the soles are oriented in opposing slanted directions. This opposition increases braking power by an average of 20 percent and decreases impact forces by and average of 20 percent. Nepal last construction. Made in Italy. Measurements: Heel Height: 1 1 4 in Weight: 2 lbs 5 oz Shaft: 9 in Platform Height: 3 4 in Product measurements were taken using size 44.5 (US Mens 11), width D - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.