A simple tool that is used for preventive purposes to prevent leakage to e.g. storm water drains. The cushion is filled with water via a filling valve (with a diameter of 35mm) and can be filled with a regular water hose. The well pad is made of an oil and UV resistant EnGuard™V modified PVC canvas. The size of the mat should be large enough to cover the edge of the well by at least 152 mm all the way around. To ensure the best contact with the ground, the cushion should not be filled more than to a height of 127 mm. If other sizes are required, please contact customer service.