Original S.W.A.T. Metro Air 9" Side Zip Waterproof Insulated Boot Black 200 Grams Thinsulate Insulation If it's durability and performance that you're looking for, this is the boot for you. The all leather waterproof upper provides the ultimate protection from the elements, and the lightweight custom-molded phylon EVA midsole delivers the comfort and performance you'll need to take on any shift. Action leather upper with polishable heel and toe YKK® side-zipper in durable Vislon® pattern for easy on and off fit with hook and loop tab-stay closure 200g Thinsulate® insulation HydroGuard waterproof full bootie construction Bloodborne pathogen resistant Foam padded collar and tongue for protection and increased breathability PU collar for easy cleaning Gusseted tongue to keep dirt and debris out Non-metallic rust proof hardware Removable custom fit EVA insole Custom-molded phylon EVA midsole for lightweight comfort and cradled support Texon stability platform for lateral support and torsional rigidity Airport friendly nylon shank for lightweight support and fatigue control Custom-molded thermoplastic heel counter and toe box for instant comfort and lateral support Non-visible heel air cell for impact absorption and comfort Durable, slip and oil resistant, non-marking cold weather outsole formulation provides traction and pliability even in icy conditions for ultimate slip resistance that well exceeds the ASTM F2913-11 test for slip resistance 48 Oz. (1350g) Original S.W.A.T. Metro Air 9" Side Zip Waterproof Insulated Boot Black