Features of the Merrell Men's Icepack Moc Polar Waterproof Shoe M Select WARM 200 grams of Insulation Fleece linning for warmth and comfort Waterproof suede Upper Mudguard for protection Kinetic Fit Base removable contoured insole for flexible support Merrell Air Cushion in the heel absorbs shock and adds stability Tread sheds Snow, water and ice Lugs designed to cut through ice Wet Snow, and wet ice specialized design Breathable: Releases perspiration External moisture from precipitation