This raised garden bed features a self-watering system with a water storage tray that allows roots to fully absorb water and nutrients while maintaining proper oxygen flow. The breathable sidewall design and removable water blockers on each side help manage water levels effectively, preventing root rot and over-drying. Simply open the water blocker when you need to drain and refresh the water.Constructed from reinforced polypropylene material, this planter box supports up to 220 pounds and withstands constant moisture and UV exposure for long-lasting outdoor use. The elevated design is ideal for growing vegetables, herbs, and flowers on patios, balconies, or in garden spaces. Assembly is straightforward with the included base plate, side panels, and upright posts.This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.