Insulating device

FIG. 1 is a top, front, left perspective view of an insulating device showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The zig-zag broken lines near the top portion represent zipper teeth and the loop-patterned broken lines in FIG. 3 represent a loop patch area and both of which form no part of the claimed design. The uneven length broken lines and the even-length broken lines form no part of the claimed design.