Shova Black General Purpose Gumboot A unisex, general purpose, knee length PVC gumboot for use in the agricultural and food processing industries. With an average weight of 2kg, they are hard wearing and have excellent grip and sole support. About Neptun Boots: All our gumboots are made from PVC (Polyvinylchloride). We have a range of general purpose and safety PVC gumboots. Our product range includes kids, ladies and mens boots. Neptun Boot complies to and is certified locally and Internationally. Neptun Boot is a SABS (South African Bureau of Standards) certified manufacturer, holding permits for both PVC and PU manufacture. All of our safety and food industry products carry the SABS mark. Neptun Boot safety gumboots and safety footwear also comply to ISO EN standards as well as the Australian Standards.