• 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
• Compatible with various non-automatic, semi-automatic, and automatic crampons. Crampon compatibility is NOT ensured, and boot-crampon compatibility needs to be inspected

ITEM: 21L
SIZES: 36 - 42 (half sizes)
WEIGHT: 25.20oz / 716g
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™