Durable Materials:The weight bags adopt premium 1680D fabric covering with PVC, double-stitched seam, guarantee tear resistance and durability, long service life for years. > Load Capacity :Each sandbag can hold up to about 25 pounds on sand, rock or dirt and other surfaces, so there's no worry to stand. make for tent that is blown away by wind or other elements. Set of 4 weight bags:Stabilize any instant awning, each sand weight bag size is 38*35.5 cm, suitable for pop up awning structures or folding gazebos, patio furniture, with a set of universal durable weight bags. Sand NOT included:You can fill it with sand, rocks or sealed water bottle or water bag, please note sand is NOT included, bags ONLY.