Design: Seam-sealed waterproof genuine suede and leather upper Lace up style with waterproof inside zipper and decorative side buckle HEAT-MX(TM) 90 sustainable thermal insulation keeps the feet warm Odor-eliminating, natural and non-toxic Cleansport NXT(TM) treatment In-Shoe Comfort: Moisture wicking soft boa lining allows for comfortable all-day wear Removable CushyStep Everyday EVA foam footbed provides comfort and support Durability & Traction: ASPEN rubber outsole uses deep treads with GripXT, for traction in rainy and light snow conditions Additional Details: Comfortable down to -4degF Height: 8 in Weight: 2.6 lbs per pair Circumference: 11.5 in (size 7) Leather is from a tannery rated gold for its water, energy, and waste management practices