Design: Seam-sealed waterproof genuine suede upper for reliable protection in any weather Lace up style for a secure fit Waterproof gusset tongue comfortably protects the foot HEAT-MX(TM) sustainable thermal insulation keeps the feet warm Heel pull loop for easy on and off In-Shoe Comfort: Moisture wicking fleece lining for comfortable all-day wear Removable, EVA footbed for cushioning and comfort Durability & Traction: Waterproof and lightweight synthetic rubber shell Defender2 outsole offers heightened weather stability and traction Channels easily disperse snow, mud and water Additional Details: Comfortable down to -40degF Odor-eliminating treatment Leather is from a tannery rated gold for its water, energy, and waste management practices