Insulating device

<figref idref="DRAWINGS">FIG. 1</figref> is a front view of an insulating device showing our new design;

<figref idref="DRAWINGS">FIG. 2</figref> is a side view thereof;

<figref idref="DRAWINGS">FIG. 3</figref> is a rear view thereof;

<figref idref="DRAWINGS">FIG. 4</figref> is a top view thereof; and,

<figref idref="DRAWINGS">FIG. 5</figref> is a bottom view.

The broken lines immediately adjacent to the shaded area define the bounds of the claimed design and form no part thereof. The broken lines depicting the remainder of the insulating device form no part of the claimed design.