FIG. 1 is a top plan view of an insulating blanket showing our new design in a flattened condition;
FIG. 2 is a sectional view thereof, as taken along line 2—2 in FIG. 1, in a direction indicated by arrows; and,
FIG. 3 is a sectional view thereof, as taken along line 3—3 in FIG. 1, in a direction indicated by arrows.