Design: Seam-sealed waterproof nylon upper Faux fur snow collar and gusset tongue Adjustable bungee lacing system In-Shoe Comfort: Odor-eliminating, natural and non-toxic Cleansport NXT(TM) treatment Moisture-wicking faux shearling lining Removable, molded EVA footbed for cushioning and comfort HEAT-MX(TM) sustainable thermal insulation for warmth Durability and Traction: Waterproof and flexible synthetic rubber shell Heel counter lug for easy removal and snowshoe strap retention ICEKISS dual-density synthetic rubber outsole Self-cleaning tread design keeps snow from accumulating in the outsole Additional Details: Vegan-friendly Height: 8 inches Weight: 2.2 lbs per pair Circumference (based on size 7): 11 inches -40degF comfort rating