The ornamental design for a sleeve for foodcontainers, substantially as shown and described.
FIG. 1 is a first side view of a sleeve for food containers, embodying my new design;
FIG. 2 is a second side view thereof;
FIG. 3 is a third side view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a cross-sectional view thereof, taken in the direction of line 6-6 as seen in FIG. 4;
FIG. 7 is a rotated side view thereof, shown with an alternate environment; and,
FIG. 8 is another side view thereof.
The broken lines in the figures indicate unclaimed parts of the article and/or unclaimed environment that are not part of the design illustrated herein. The broken lines that define boundaries of the claimed design form no part thereof.