About this item Easy to Use:Sand is normally unavailable for you?Don't worry.Just fill the bags with water.They can fix your canopy tent as sand bags do.Each water weight bag weights rated for 20lbs.These water weights also meet the mixed use of water and sand. Waterproof & Durable:Made of strong PVC material,waterproof and durable. Screw cap top for reliable sealing, prevent leaking and puncturing. Portable Size: These water bags can be folded into a portable size when they are empty and take up little space. The 4 bags collapsed take up less room than a full small sandbag. Multi-Usage:A perfect addition to your pop up canopy tent.Even in a stormy day, these water canopy bags can prevent the tent from tipping over. Note:4 water weight bags included. Filler is not Included.