Abstract: A lockable container has a neck on a container body and a cap on the neck. Screw-threads releasibly retain the cap on the neck. The cap includes a locking member which is movable between a locking position, in which the locking member prevents the relative rotation of the cap and the neck, and a released position, in which the locking member permits the relative rotation of the cap and the neck. A pair of annular members extending around the closure and rotatable independently of one another interengage with the locking member for releasibly retaining the locking member in the locking position and can be rotatably adjusted of the annular members to release the locking member for movement to its released position. On movement of the locking member into its locking position, a closure connected to the locking member closes an outlet in the cap for preventing outflow of liquid from the container.