Safety: Certified against snake strike ASTM certified against electrical hazard Design: 100% waterproof, 5mm Neoprene bootie, 3D airmesh linings for breathability Full rubber coverage to top of the boot NZYM(R) odor control and moisture management helps keep boots fresh bioDEWIX(R) antimicrobial footbed insert topcover EVA midsole for added comfort and ground insulation Self-cleaning MS-1 lug outsole provides traction in most every outdoor terrain Additional Details: Comfort range: Sub-freezing to 65degF