Use this Square Water Ballast in conjunction with the Heavy-Duty Cross Base to add weight and stability to your medium or large sail flag even when the weather won't cooperate. An inflatable/ deflatable heavy duty water weight with easy fill plastic port and an attached cap.
- Holds 4.25 Gallons of water
- Weighs 35lbs. when filled with water, .5lbs. when empty
- 21" w x 21" d