FIG. 1 is a top perspective view of a container sleeve showing my new design, shown in use;
FIG. 2 is a top, front, right side perspective view of the container sleeve of FIG. 1, when not in use;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a rear elevation view thereof.
In the drawings, the broken lines depict environmental subject matter only and form no part of the claimed design.