100 percent waterproof, 100 percent muckproof, 3 millimeter neoprene bootie, 8 inch bootie with lace up construction for a tailored fit, muckskin overlays for reduced weight without sacrificing protection, molded polyurethane with memory foam for superior underfoot comfort, biolite foam midsole wrapping up to counter, notched heel collar to eliminate Achilles fatigue, rubber heel reinforcement for protection and durability, rugged rubber outsole for all terrain traction dispersion, BioDewix Dry footbed insert top cover with moisture management.