Boreal insulated and prepped the Super Latok Mountaineering Boot for alpine ascents in winter. It has a waterproof, breathable Dry-Line lining for snowy traverses, and the thick, split leather upper uses Teramida reinforcements to ensure long-lasting durability. Thinsulate insulation provides a surprising amount of warmth, given how little the boot weighs, and anatomic padding cradles your foot from base to summit. The ProMidsole provides optimal shock-absorption, while the PBG-680 reinforcements ensure torsion control. Made with three layers of rubber, the rugged Mount FDS-3 sole features step-in crampon compatibility for icy terrain.