All-day comfort isn't hard to come by when wearing the Denison 6 in. boot with its air-frame molded liner. A liner that prevents sweat by circulating excess heat out through innovative molded air channels. This allows feet to stay cool in hot weather, warm when it's cold, and dry in all conditions. Air-frame Molded Liner Helly Tech Performance Waterproof Membrane HellyGrip Outsole Custom PU Insole Slip Resistant Outsole Meets all SATRA Standards