US D256630 S
Abstract available in
FIG. 1 is a perspective view of a knapsack cooler showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a bottom plan thereof; and
FIG. 6 is a rear elevational view thereof.