Made of 600D oxford fabric, tear and wear resistant. Designed to hold your tent, umbrella and other outdoor furniture securely in place. Features: Set of 4 weight bags, the weight capacity of each bag is approximately 25-30 lbs. Can be filled with sand, pebbles, rags or any other material available nearby. Strong adhesive fastening tape ensures that the bag fastens the frame tightly and firmly. Quick and easy filling thanks to the large opening. Made from high density 600D Oxford fabric which is durable, water resistant and tear resistant. Improved cross-stitching adds stability and sturdiness. Ideal for stabilizing any pop-up awning, pop-up awning or collapsible gazebo structures. Features: Material: 600D Oxford cloth Color: Black Unit Length: 50cm / 19.7in Package Size: 25*25*3cm/9.8*9.8*1.2in Package weight: 450g / 15.9oz Package List: 4 * Sandbags Note: Bag only, the filling is not included.