Design: Seam-sealed waterproof protection Combination of waterproof leather and water-resistant flannel/knit quilted upper ISA TanTec's LITE(TM) eco-friendly leather HEAT-MX(TM) sustainable thermal insulation keeps the feet warm Odor-eliminating, natural and non-toxic Cleansport NXT(TM) treatment In-Shoe Comfort: Moisture wicking fleece lining allows for comfortable all-day wear Removable molded EVA footbed for cushioning and comfort Durability & Traction: DOVER outsole with deep, self-cleaning treads for stability in snowy conditions Waterproof and recyclable lightweight synthetic RubberHe shell Proprietary technology offers traction and increased flexibility Additional Details: Comfortable down to -4degF Height: 11.02 in Weight: 2.29 lbs per pair Circumference: 11.81 in (size 7) Made in USA with Canadian and foreign materials or made in Canada with Canadian and foreign materials Leather is from a tannery rated gold for its water, energy, and waste management practices