La Sportiva - G-Summit Mountaineering Boot - Men's - Black/Yellow

The G-Summit is the new benchmark for high altitude technical mountaineering, developed to satisfy two needs: to be an extremely warm single boot for high altitude mountaineering and be a lightweight and precise double boot for extended expeditions in highly challenging climates. With its unique removable liner and thermal insole, the G-Summit is a customizable product based on the requirements of the user and the terrain/conditions of intended use. Features Inner shell made with the patented Core-Wrap(TM) technology maximizes warmth while remaining ultralight. The BOAA(R) Fit System makes it quick to adjust the lacing fastener - designed to be opened and closed while wearing gloves in cold conditions. Optional liner addition can turn the G-Summit into a double boot for increased warmth. VibramA(R) Dura Step compound offers the best grip for mountaineering excelling in low temps and wet terrain. The Ice-Tech(TM) tread is divided into two sections enhancing performance during ascents and hiking. Resoleable, to reduce environmental impacts. Specifications Weight: 29.2 oz / 830 g Last: Nepal Upper: Abrasion Resistant Fabric / TPU Mudguard Shield / Differentiated lacing w/ BOAA(R) M4 Dial System / Weatherproof Zipper / Water Repellent Internal Gusset / Core-Wrap(TM) Inner Shell / TPU Heel & Toe Caps / PU Techlite Rand (lateral) & Rubber Rand (medial) Inner Boot: 3mm Thermo Reflective PE + EVA Single Density Foam Insole: 5mm Thermal Insole (Removable) / 5mm Carbon Z-Therm(TM) (Mounted) Midsole: None / TPU Insert For Front & Rear Crampon Attachment Sole: VibramA(R) Ice-Tech(TM) w/ Climbing Zone Platform (Toe) / Impact Brake System(TM) / VibramA(R) Dura Step Rubber Compound Fit: Wide