The warm comfort of the North Face® ThermoBall™ Boot Zipper keeps the cold at bay so you can blaze a trail through the snowy countryside.This brand is a member of the Sustainable Apparel Coalition.Waterproof PU-coated leather upper with 100% recycled P.E.T. baffled ripstop shaft.PrimaLoft® ThermoBall™ insulation provides the lightweight warmth of down with the exceptional wet-weather insulation of synthetics. Lace-up system for a more secure fit.Inside PU-coated, water-resistant medial zipper for easy on and off.Abrasion-resistant synthetic mudguard. Cozy Oso-fleece-lined collar offers a great next-to-foot feel.Cushioned OrthoLite® Rebound footbed provides the ultimate in comfort and underfoot support.Abrasion-resistant, injection-molded EVA midsole and outsole supplies all-day cushioned comfort. IcePick® temperature-sensitive rubber outsole pods deliver increased traction.