Please click here for the La Sportiva Size Conversion.The Nepal Cube GTX by La Sportiva® is a lightweight mountaineering boot ideal for climbing on mixed terrain. 3.2mm+ silicone impregnated Idro-Perwanger Roughout Leather upper with high-abrasion resistant fabric.GORE-TEX® Insulated Comfort Footwear lining makes the boot completely waterproof and warmer for high altitudes and extreme cold.Removable 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 Carbon Tech honeycomb insole is lightweight, stiff, low profile and features 4mm EVA support. Air-injected rubber rand.Cushioned EVA midsole 2 mm polyurethane-graded for crampon attachment.Durable Vibram® 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% and decreases impact forces by and average of 20%.Nepal last construction. Made in Italy.