On your next trip to the snow country, be sure your boots are up the task!The Blizzard XT boot is constructed of durable, waterproof textiles.Drawstring with barrel lock closure system. Omni-Heat reflective lining.Removable 9mm recycled felt inner boot.25 mm bonded felt frost plug.Waterproof vulcanized rubber shell with Sorel aero-trac non loading outsole.Rated: -40° F.