The Good Ideas Garden Wizard Raised Bed Garden is a patented design that uses four 50" wall sections to enclose a 4'x4'x10" space. This self-watering bed makes use of special soaker hoses that connect to each wall. The unique soaker hoses use a slow-drip, wicking action that only delivers water to the soil when needed. When you fill one wall with water, it transfers to each of the other walls while simultaneously watering the garden. The Raised Bed Garden takes no more than 5 minutes to set up from start to finish. Simply lay out your setup location, connect the wall sections with the pins, and attach your included soaker hoses. Each garden bed can be expanded with the matching Good Ideas Garden Wizard Self-Watering Border Walls.