Garden Armor New Easy Fill Cap 15 Gallon Slow-Release Tree Watering Ring &hellip; Provides a continuous irrigation system from two valves for even water distribution Durable ring is made from heavy duty PVC material that can naturally withstand UV Holds up to 15 gallons of water with a drip time of 5-8 hours for deep saturation of soil Reduces tree and shrub transplant shock and drought stress Low profile design is great for trees and shrubs