The Men's THERMO GLACIER MID WATERPROOF by Merrell in EARTH is a winter boot that will confidently keep you warm! With heat-reflecting technology, compression-proof insulation and Vibram® Arctic Grip® wet ice technology this winter boot won't slow you down. Features and Benefits: M Select™ DRY impermeable membrane seals out water and lets moisture escape Waterproof full grain leather upper Metal hooks for secure lacing Protective rubber toe cap Bellows tongue keeps debris out Conductor™ fleece lining for added warmth 1.5mm Primaloft® Aerogel over-the-toe insulation traps in heat where you need it most--even when compressed Heat-reflecting insole radiates body heat back toward the foot Merrell Kinetic Fit™ BASE removable contoured insole for flexible support Compression molded EVA midsole for stability and comfort Molded nylon arch shank Vibram® Arctic Grip® outsole for grip on wet ice and packed snow 5mm lug depth Weight: 2lbs9oz/1172g