The North Face Men's Chilkats Boot feature a waterproof & durable fully seam sealed full grain leather upper, Primaloft insulation to -32 C, a Dri-lex fleece collar & tongue lining that wicks moisture & a winter grip rubber outsole which will not let you down. Features Waterproof, BLC-compliant leather upper Waterproof construction for ultimate weather protection 200g Heatseeker insulation Dri-Lex fleece collar & tongue lining Anatomically engineered, injection-molded waterproof TPR shell with forefoot grooves Rustproof hardware Gaiter-compatible D-ring BOTTOM Compression-molded EVA midsole Durable TNF Winter Grip rubber outsole