The large Plant Nappy® is designed to provide spill and leak containment for larger pieces of plant equipment. The nappy is lightweight and can be deployed in all weather conditions. Rainwater runs through the side walls of the unit, whilst any pollutants remain trapped. The side walls are tough and flexible enough for heavy machinery to be ran over them and then spring back into shape. The top cover is made from Vinyl coated polyester mesh making it oil & chemical resistant, and abrasion and UV resistant.