Each of these weight bags can hold up to 55 lbs. of fillers such as sand, stones, gravel, and dirt (fillers need to be prepared by yourself). They are very convenient to install and remove, and are suitable for any place where extra weight is required. These weight bags are made of high-quality Oxford cloth with an added premium coating, making them sturdy and durable. Meanwhile, the handles are specially reinforced, ensuring extremely high stability. The design is ingenious, featuring a double leak-proof design. The double-layer Velcro can effectively prevent sand leakage, so you don't have to worry about sand spilling even when using the bags at home. They are simple and safe to use. You just need to fill them with sand and fasten the Velcro, and then you can use them with confidence. These weight bags have a wide range of applications. They can not only add weight to the umbrella base to stabilize the sunshade umbrella in windy weather, but also be used to keep the door open, stabilize the patio heater, and so on. They allow you to enjoy more peaceful moments in various scenarios and are a great little helper to enhance the convenience and safety of your life. Size: large. Color: Black.