Abstract: A closure for a container includes a base having an aperture therethrough, a membrane attached to the bottom of the base and adapted to be attached to the container to seal the opening, a pull tab positioned within the aperture and connected to the base around at least a portion of an inner periphery of the aperture by a frangible portion, and a cap connected to the base by a hinge. The base is adapted to be connected to the container such that the aperture is positioned over the opening. The pull tab is connected to the membrane, so that when a user pulls on the pull tab, the frangible portion breaks to allow removal of the pull tab to open the aperture, and removal of the pull tab causes the portion of the membrane to tear away to unseal the opening of the container. The cap is pivotable about the hinge between an open position and a closed position.

Abstract: A container for containing a flowable substance includes a container body, a substantially elliptical opening in the container body, and a resealable closure affixed over the opening. The container body defines an internal cavity that is adapted to contain the flowable substance therein. The opening is adapted to allow the flowable substance to flow therethrough. The resealable closure is adjustable between an open position, where the flowable substance can flow through the opening, and a closed position, where the closure obstructs the opening to prevent the flowable substance from flowing through the opening. When the closure is in the open position and the container is substantially filled with the flowable substance, the flowable substance can flow through the opening without interrupting airflow through the opening when the container is tilted over a range of tilt angles of approximately 35 degrees.