Portable drinking vessel assembly

A portable drinking vessel assembly, the assembly comprising:

• a vessel defined by a side wall, a bottom portion that forms a bottom opening, and a top portion having a rounded rim that forms a top opening configured for drinking by a user, the side wall, the top portion, and the bottom portion being continuous and forming a cavity;
• a conduit having a first end that forms a first opening and a second end that forms a second opening, the first opening being larger than the second opening, the first end integrally joined with a bottom surface of the bottom portion of the vessel, and the second end adapted to be inserted into an opening in a bottle neck whereby the first opening of the conduit is in communication with the bottom opening of the vessel;
• and a sleeve including a plurality of ribs disposed in a spaced-apart relationship thereon, the sleeve encapsulates a longitudinal portion of the conduit, the plurality of ribs further configured to enable sealed coupling between the conduit and an inner surface of the bottle neck, and a space between adjacent ones of the plurality of ribs is greater than a radial height of the plurality of ribs, wherein a space between adjacent ones of the plurality of ribs is greater than a thickness of a respective one of the plurality of the ribs, the second end of the conduit includes an outer radial enlargement relative to a medial portion of the tapered conduit, and the outer radial enlargement includes a truncated cone shape tapered toward the sleeve.