The North Face Chilkat 400 Boot - Women'sSUB-ZERO ADVENTURES NEED THE NORTH FACE CHILKAT 400 BOOT.Don't let sub-zero temps keep you from exploring this winter. The North Face Chilkat 400 Boots are the ultimate waterproof winter boots designed to handle Artic conditions. The waterproof, full-grain leather upper includes a 400g PrimaLoft Silver Insulation for warmth in extreme conditions. The bottom featrues IcePick temperature-sensitive lugs for increased traction on ice, while the compression-molded EVA midsole will keep your feet comfortable. FEATURESUpper: Waterproof, full-grain leather upperWaterproof, cold-weather leather utility boot that's insulated for extreme warmthUpper: Waterproof construction for the ultimate weather protectionUpper: 400 g PrimaLoft(R) Silver Insulation Eco recycled insulationBottom: Northotic(TM) 2.0 dual-density footbed with softer heel and forefoot-cushioning padsBottom: Compression-molded EVA midsoleBottom: Durable TNF Winter Grip(R) outsoleBottom: IcePick(R) temperature-sensitive lugs for increased traction