Material: 600D Oxford cloth, high strength, waterproof, sunscreen, easy to clean. High quality: upgraded sandbags are softer, each sandbag has a double zipper and a rubber lining to prevent sand from escaping. The sandbags are empty and you can fill them yourself with materials such as gravel, stones, sand, etc. There are four iron hooks in the sandbag that can be fixed anywhere you want, and it works great on windy or uneven ground. Wide range of uses: suitable for light stands, tripods, photo studios, photography, tents, outdoors, etc. Packing list: 4 sandbags + 4* hooks We do not sell other items in the pictures. Due to the differences between different monitors, pictures may not reflect the actual color of the item. Due to manual measurement, please allow slight errors in size.