The Franklin Self Watering Planter combines a classic planter design with sub-irrigation technology for a vessel that's equal parts form and function. The patented sub-irrigation insert allow plants to drink from the roots, just as nature intended. Simply lift the planter to refill the dish below when the reservoir is empty. Its never been easier to know when and how much to water your plants! *Planter is made from glazed ceramic. *Each planter includes aeration stones and a sub-irrigation insert. *Measures 6 3/4" Wide x 5 1/2" High. Inside Diameter is 6 1/2".