Muck Boots Woody Sport Ankle Boot After years of studying how our boots are worn, we designed a new a new upper on our traditional Woody Sport outsole. This new ankle height boot features a 100% waterproof insulated upper. It is built to keep you dry and comfortable all day long Fastening:Slip On Material Composition:Other Materials/Other Materials/Other MaterialsCare Instructions:N/A 5mm Neoprene Bootie for Comfort and Performance. bioDEWIX Dry Footbed Insert Topcover with NZYM for Odor Control and Moisture Management. Cool Weather Lining: Soft, Insulation, Light-weight, Performance Materials for Warmth and Comfort. Lightweight EVA Midsole for All Day Comfort and Support. Rugged rubber outsole for traction.