Made of 600D oxford fabric, tear-resistant 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 about 25-30 lbs. Can be filled with sand, pebbles, rags or any other material available nearby. Strong adhesive fastening tape ensures the bag attaches to the frame tightly and firmly. Quick and easy to fill with the large opening. Made from high density 600D Oxford fabric which is durable, water-resistant and tear-resistant. Improved cross stitching enhances stability and sturdiness. Ideal for stabilizing any instant canopy, pop-up canopy or gazebo structures foldable. Features: Material: 600D Oxford cloth Color: Black Unit Length: 50cm / 19.7in Package List: 4 x Sandbags Note: Bag only, filler is not included.