This teapot has a built in strainer at the base of the spot made of the same clay as the teapot. Yixing teapots date back to the Sung Dynasty (960-1279)when purple clay was first discovered. They are renowned as the "best vessels for brewing" by chinese tea aficionados.Yixing teapots have the unique ability to absorb the tea flavor with continued usage. Holds approximately 17.8 oz. 4.5"H, 5" Diameter