A lid for a container holding a flowable substance wherein the lid has a body with a top wall, a side wall, and a mounting portion for connecting the lid on the container. The body has a drink opening and at least one retaining member positioned in the top wall in various positions with respect to the drink opening. The lid further has a closure member that is movable between a first position wherein a portion of the closure member is received in the opening, and a second position wherein a portion of the closure member is received in the retaining member. The opening and the closure member are cooperatively dimensioned such that the closure member is removably inserted in the opening. The retaining member and the closure member are cooperatively dimensioned such that the closure member is removably inserted in the retaining member.