A sturdy, durable double boot for high altitude mountaineering. When the conditions are cold and high the Baruntse offers a hospitable climate to keep your feet warm and dry. Ideal for use on 6-7000 meter peaks or in harsh winter conditions where you don"t want to think about your feet. The thermo-formable inner boot sports the patented speed lacing system and couples with the highly insulated multi-layered PE outerboot for dependable warmth and a PU coating to keep moisture and cold outside and heat inside the boot. IDEAL TERRAIN: 6000-7000 meter peaks or high cold mountaineering conditions. WEIGHT: 44.7 oz/ 1267 g. LAST: Nuptse. OUTER BOOT: Transparent PU Tech anti-abrasion film with high insulation expanded PE/ High density expanded PE insulating netting/ Synthetic mico-fiber/ High abrasion resistant Cordura/ Giugiaro lacing hardware. INNER BOOT:Anti-abrasion Cordura/ Thermo-moldable 7mm high density insulating EVA. INSOLE: 6 mm isolating Ibi-Thermo + PE insulating barrier and aluminum insulation. MIDSOLE: 8-9 mm TPU/SBR Air Cushion. SOLE: Vibram® Montagna. SIZES: 37-48 (half sizes) 49, 50. COLOR:Silver. ITEM NUMBER: 835