Screw-cap for beverages holding containers

A container closure (10) is disclosed which includes a shell (12) attachable to a container around a container opening thereof. The shell has a shell opening (20) in fluid communication with the container opening when the shell is attached to the container. A tip (14) is received on the shell movable between a closed position sealing the shell opening and an open position. A cover (16) is releasably attached to the shell in a manner indicative of the tip being positioned in the closed position when the cover is attached to the shell. Both the shell and the cover may be provided with tamper-evident bands (40, 62). The present invention is particularly well adapted to be formed as a push-pull container closure for sports bottles and the like.