A dual functioning hair catcher and drain stop in one from the Flex collection by Umbra press the centre button to allow water flow and use as a hair catcher.Push on the upturned edges to snap the valve shut and use as a drain stop easy to care for.Simply wipe or rinse with mild soap design: Alan Wisniewski and Anthony Keeler measures 3 1/2 dia.X 1 1/4 inches (8.9 dia.X 3.2 cm)