GUC, only used a couple times. The Comforter by Kamik comes with Kamik's proprietary Zylex® removable liner. A revolutionary three layer design provides superior warmth and moisture management protection. With durable, traditional styling, and an easy on and off design, these boots are destined to stay a classic for years to come. Kamik snow boots run on the small side so please size up a size for the best fit. Features Comfort rating: -25Ëš F Duration 600 Nylon Upper Moisture Wicking Lining Removable 6mm Zylex® Liner Faux Fur Snow Collar Rust Proof D-Ring Lacing System Waterproof & Flexible Synthetic Rubber Shell PULSE Rubber Bottom Height: 10 Inches Weight per Pair: 2.4 lbs Made in Canada, Assembled in the USA