Features of The North Face Women's Shellista IV Tall Boot Upper: Premium waterproof and salt-resistant leather and wool Upper Snowplow waterproof leather is a rugged leather with light pull up, antiquing and has a smooth, slick surface Tech-inspired, molded, waterproof TPR shell Waterproof construction 200 g PrimaLoft Insulation Eco Sole Unit: Durable TNF Winter Grip rubber Outsole IcePick temperature-sensitive rubber lugs for increased traction