Cooler

FIG. 1 is a front elevation view of a cooler in accordance with the present design;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front, right perspective view thereof.

The broken lines in the figures illustrate the portions of the cooler that form no part of the claimed design.