The North Face Men's Chilkat 400 Boots US 8 Black Upper: Waterproof, BLC-compliant full-grain leather upper Waterproof, cold-weather leather utility boot that's insulated for extreme warmth Upper: Waterproof construction for the ultimate weather protection Upper: 400 g PrimaLoft Silver Insulation Eco recycled insulation Upper: Anatomically engineered, injection-molded, waterproof TPR shell