Durable Material: The tree watering bag made of PVC, sun protection, durable and tear resistance, can used for a long time. Large Capacity: 15 Gallons Capacity tree irrigation watering bag for 4-8 hours slow releasing use, no need to manually water frequently, save water and labor. Drip Irrigation System: The tree bag water provides two drip irrigation systems to distribute water evenly,keep the roots of the saplings moist, which improve survival rate during dry season. Tree Watering Bag: Suitable for trunk diameter is 5.7 inches(14.5cm), such as newly planted trees, shrubs and evergreens, only need to inject water 1 to 2 times a week. Easy to Install: Place the water bag around the bottom of the tree trunk, open the lid on the top of the irrigation port, put the water pipe into the irrigation port to start inject watering, and cover the lid after filling it (you can reasonably add nutrient solution according to needs).