The ornamental design for a sleeve for a drinkcontainer, as shown and described.
FIG. 1 is a front perspective view of a sleeve for a drink container according to the new design.
FIG. 2 is a front view of the sleeve for a drink container of FIG. 1.
FIG. 3 is a rear view of the sleeve for a drink container of FIG. 1.
FIG. 4 is a right side view of the sleeve for a drink container of FIG. 1.
FIG. 5 is a left side view of the sleeve for a drink container of FIG. 1.
FIG. 6 is a top view of the sleeve for a drink container of FIG. 1; and,
FIG. 7 is a bottom view of the sleeve for a drink container of FIG. 1.
The portion of the sleeve for a drink container shown in broken lines are environmental only and form no part of the claimed design. The showing of solid black shading in the drawing views represents color contrast.