Baffin® Women's Snogoose Boot specifically designed for Women, combines Baffin®'s Polar Proven features with lightweight comfort. The shell is made from an improved lightweight Synthetic Recyclable Rubber. A flexible midsole and internal arch support system are bonded to a Premium Rubber compound outsole. Double-weave 900 denier Nylon upper for strength, protection and to reduce water and salt stains Flexible midsole and arch support Durable Rubber compond outsole Product Features: Upper:Leather & double-weave 900 denier nylon w/ reflective piping Lining:7-layer inner boot system with Thermaplush Comfort Range:-40ºF Outsole:Rubber with integrated arch support Midsole:Proprietary cold-resistant EVA (Ethyl Vinyl Acetate) Cushioned Foam Shell material:Synthetic Rubber Base:Synthetic Rubber Baffin Women's Snogoose Boot