1、Premium Material: The RV sewer hose weights are made from brightly colored heavy duty PVC plastic which is incredibly sturdy and waterproof. They can be filled with different objects to add weight. 2、Easy to Use: The RV hose fastening device is very easy to use. These bags can be filled with stones, sand, or soil to prevent the sewer nozzle from flying out when pulling the black water tank valve, ensuring stability. 3、Prevent Spillage: These added RV weights to the sewer hose can reduce spillage, help to keep the hose in place and allow for a more streamlined drainage system. 4、Practical in Use: This RV hose bag is ideal for RV travelers as it is a camping essential. The bags are not just functional, but also very portable and easy to carry around. 5、Convenient: The RV hose support bag is bundled together to prevent moves, but it can be disconnected and used independently, offering flexibility of use.