These beautiful planters are made of a single piece of aluminum. They have a reservoir at the base separated from the main body to keep any standing water separate away from the plant. These planters and stands come separately so you can mix and match. The planters in a small (8 inches) and a large (16 inches) sizes. The stands, which are bought separately and aren't necessary if you aren't looking for height, match the planters: the large planter's stand is 14 inches high, and a taller, narrower stand at 15.5 inches high fits the smaller 8 inch planter.