A cup lid having a top panel with an upwardly projecting rim peripherally thereabout, a recessed channel in the top panel extends from a central area thereof to the rim, the channel having a bottom with a sipping opening defined therethrough adjacent the rim, a closure member selectively receivable in said channel for movement between open and closed positions relative to said opening, the closure member being integrally formed with said lid, or a companion cup, remote from said channel for selective severing therefrom and subsequent mounting within the channel.