Treegator Original has been the preferred tree watering bag by professionals worldwide since 1989. Ideal for use on trees with branches starting at least 25 inches above the ground. Easy to use - just zip, fill and let drip! A single bag fits tree trunks from 1 to 3 inches in diameter and holds up to 15 gallons. Two single bags zipped together back-=to-back fits tree trunks up to 8 inches in diameter and holds up to 50 gallons total. Two water release points continuously provide water for approximately 5 to 9 hours. Provides deep water saturation with no run-off. Refill once every 5 to 7 days for most new plantings. Made from UV-protected polyethylene, with nylon zippers and polypro straps. Single bag is 30" tall x 18" wide when full.