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 contrast in shading represents a contrast in appearance only and does not represent any particular color, material, texture or finish. The unshaded regions within or adjacent to the shaded area form no part of the claimed design. The broken lines showing the remainder of the insulating device are for environmental purposes only and form no part of the claimed design.