Hydraballast - Durable Water Bag - Add Weight for Stability- Portable Source for Non-potable Water - Lightweight, Re-usable, and Eco-friendly (1 Unit) Double re-enforced handle guaranteed not to tear Easy to use - Weighs less than a pound when empty Fill with standard garden hose, holds up to 5 gallons weighing 40 lbs when full Constructed of industrial strength PVC Tarpauling material Simply empty when done, fold up for storage and re-use when needed