I claim the ornamental design for a printed cooling material, as shown and described.
FIG. 1 is a front view of a printed cooling material, showing my new design;
FIG. 2 is a back view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a left side view thereof;
FIG. 7 is a cross-sectional view thereof; and,
FIG. 8 is a perspective view thereof.
The claim is directed to the star elements drawn in solid lines and the areas within these elements arranged vertically and horizontally on a square sheet. The broken lines representing the back and the depth of the design represent unclaimed portions of the printed cooling material and form no part of the claimed design.