Abstract: Disclosed is a double-wall cooling apparatus for use with a beverage container to keep the beverage or cold drinks cold for hours. The double-wall cooling apparatus includes a bottom section, a top section, and a twist-lock. The bottom section haying a cylindrical shape to conform to the shape of the beverage container. The bottom section comprises a closed bottom portion and an open-top portion. The top section being inwardly contracted at the top to form an opening. The twist-lock secures be top section and the bottom section. The bottom section and the top seem are detachably connected therewith.

Abstract: A thermal and cold insulation bottle structure is disclosed herein, comprising: a bottle body having an integrally formed stainless steel double wall, an opening, an interior space, and a base portion, wherein the opening having an inner wall disposed with a female thread; a lid having a male thread corresponding to the female thread to screw on the opening of the bottle body; and a removable bottom cover having an expandable plug, a screw secured to the center of the expandable plug, a nut engaged with the screw, and a lever connected to the nut, so as to allow the removable bottom cover to be accommodated in the base portion of the interior space of the bottle body.