Weight Bags (4 Pack Weight Bags) fit any tent, gazebo (fits leg sizes from 15mm to 50mm) and camping awnings, sports umbrellas, trampolines. The weight bag can hold up to 28 pounds on sand, rocks or dirt, making it ideal for any surface. Waterproof case made of 1680D polyester fabric with PVC, 300% more durable than most. Instantly stabilize any footrest, tent or gazebo, camping shelter, sports umbrella with a set of durable universal bags. NOTE *Sand not included*.