The 17x11in sandbag has a zipper on one side, you can put dirt, stones, sand, gravel and other heavy materials into the sandbag to add weight according to your needs. Our sandbags can either secure your baseball nets, lacrosse nets, soccer goals, golf nets, tennis nets, etc., or they can be used when you set up your photography studio to help you secure your gear and keep your equipment safe. The two sandbags in each package are made of high-quality 1000D nylon material woven, wear-resistant and tear-resistant, waterproof, sunscreen, with a long service life. Our sandbag comes with a carrying handle on the front side, so you can easily move him around, or you can hang the sandbag on the camera stand through the carrying handle. There are two holes on the reverse side, you can pass the fixing bar at the bottom of the net through the holes to further fix the net. Our sandbags are made of high-strength waterproof material, not subject to fading from the external environment, he will become your ideal choice for indoor and outdoor use.