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 right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The uneven-length broken lines represent unclaimed boundaries of the claimed design. The even-length broken lines showing the remainder of the insulating device are for environmental purposes only and form no part of the claimed design. The stipple shading in the drawings is a drawing convention to represent curvature, it does not illustrate material, surface ornamentation, or surface decoration.