US D444338 S1
FIG. 1 is a perspective view of a vacuum flask showing my new design thereof;
FIG. 2 is a right side elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a front elevational view, and the rear elevational view being the mirror image thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a left side elevational view thereof.