La Sportiva - Nepal Cube GTX - Mountaineering boots. Material type: leather|Other material information: water-repellent Idro-Perwanger leather 3+ mm|Closure: lacing|Sole: Vibram|Crampon Compatibility: crampon-compatible|Midsole: 6 mm PU with crampon attachment option|Reference size: medium-sized pair|Extras: reinforced toes|Extras: rock guard|Extras: reinforced heel|Misc: Insole: Carbon Tech (insulating and honeycomb); can be resoled; Impact Brake System; 3D Flex system; EZ Out pull tab