Abstract: A mug comprising a container and a lid, with the container having an inwardly projecting seal rim and inwardly projecting retainers spaced above the seal rim. The lid has a disc for engagement with the upper surface of the seal rim with a retainer opening for passing the retainer, and a catch for positioning under the retainer to retain the lid in the container on the seal rim. The retainer may be formed integrally with the container, or may be a stud carried in an opening in the container. The catch of the lid preferably includes a flexible center with a ramp at each end joining the catch to the disc.

Abstract: A cover for a cup, the cover comprising a cap and a lid, with the cap mountable on a cup, with the lid rotatably attached to the cap and with the cap and lid having openings for fluid flow from the cup when the openings are in alignment. The cap-lid attachment includes a first ring on the cap and a second ring on the lid, with the second ring rotating within the first ring, and with the second ring having resilient fingers projecting from the second ring past the first ring, with outwardly projecting hooks at the end of the fingers for latching the rings together. The first ring has projecting stops for engagement by the second ring hooks for limiting rotation of the lid between aligned and non-aligned positions of the openings, with the cap and lid having bands with openings therein, with the lid band overlying the cap band, and with the cap band having a rib around the cap openings and in sealing engagement with the lid band.

Abstract: A drink mug with open top, closed bottom, and a body portion between the top and bottom, an inwardly projecting ring in the body portion, spaced vertical passages in the ring, spaced notches in the body portion below the ring, a lid for resting on the ring, and latch members carried on the lid and projecting downward therefrom with the latch members passing through the vertical passages as the lid is positioned on the ring, and with the latch members positioned in the notches when the lid is rotated on the ring latching the lid in place on the ring. In the preferred embodiment flexible fingers connecting the latch members to the lid, with two vertical passages opposite each other, and two notches opposite each other and at 90.degree. to the vertical passages.