Designed for superior comfort in extreme conditions, the Sorel® Glacier men’s boot is Sorel® rated to -100°F. It features a water- and wind-resistant synthetic textile upper, with a waterproof vulcanized rubber shell and a dependable barrel-lock closure system. The AeroTrac™ outsole guarantees great grip on slippery surfaces.If you need heavy-duty warmth, protection, and comfort this winter, check into Sorel’s Glacier boot. This monster, with its hard rubber outer shell, extra-strength nylon shaft, and 1/2″-thick felt liner, will keep you cozy and dry no matter what the conditions.