Package ContainThe 4PCS yellow photography sandbags come with 4 PCS aluminum clips and 8 PE sealed bags. Warm Tip: The sandbags are empty and not loaded with sand. Excellent CraftsmanshipAimosen sandbag is made of oxford fabric, which is wear-resistant and sturdy. The PVC coated oxford cloth lining can bring you a soft and smooth tactility experience. With the auxiliary products, the PE bag can prevent the sandbag from dust and the aluminum clip can help you fix the sandbag. Dual Zippers DesignEach side of each sandbag has two opposite direction zipper. If you damage one zipper accidentally when you use, the dual zippers design can still make you use the sandbag normally. Operating StepsFirst, put the sands or gravel near your house in the PE sealed bag. Then, put the PE bag which filled with sand in the sandbag. Finally, hang the heavy duty sandbags where you need them. Flexible ApplicationThe sandbags are ideal choices for your indoor or outdoor use, can be suitable for varieties of places, such as photography tripod, photo studios, canopy swing, camping tents, outdoor patio, sports, fishing chair, picnic table, etc.