100% Waterproof; Lined With 5mm CR Flex-Foam Neoprene, Adjusts To Contours Of Foot; Fleece Lining; Comfort Insole; BioDEWIX Antimicrobial FootBed Insert Topcover With NZYM For Odor Control And Moisture Management; Lightweight; Cushioned EVA Midsole; Rugged Rubber Outsole; Pull-Tab; Comfort Range: -40 F To 40 F; Color: Grey/Gray and Green; Style #MASMW15