Abstract: A reusable drinking bottle having an improved, easily cleanable, closure adapted with a drinking spout. A closure body is adapted for mating engagement in covering relation with the open top formed in a drinking bottle. A valve insert places the interior volume of the drinking bottle in fluid communication with the exterior. An actuator is removably connected to the valve insert to allow for user actuated rotation thereof between closed and open configurations. A normally closed resilient self-sealing valve allows liquid to flow from the drinking bottle through the valve insert when configured to the open configuration. The valve insert is retained by a retaining cap in threaded engagement with the valve insert on the exterior of the base. The closure of the present invention contains only a small number of components and may be easily disassembled by the user to allow for cleaning.