100% Waterproof, 100% MUCKPROOF; 5mm Neoprene Bootie for Comfort and Performance; Breathable Mesh Sandwich Lining Improves Air Circulation; Self-Cleaning Calendered Outsole Excels in Mud, Snow and Dirt; Extra Layers of Rubber for Protection and Durability; Double Heel and Toe Reinforcement; bioDEWIX Dry Footbed Insert Topcover with NZYM for Odor Control and Moisture Management; ASTM F2892-18 EH