Ideal for icy, cold commutes, the SHELLISTA II caribou waterproof snow boot from THE NORTH FACE are incredibly warm winter boots that are crafted of waterproof leather. Featuring a waterproof shell bottom for durable protection against the elements. Soft, oversized knit collar detail with 200 g PrimaLoft Silver Insulation Eco. Injection-molded, waterproof TPR shell. Durable, TNF Winter Grip rubber outsole base with IcePick temperature-sensitive lugs.