I claim the ornamental design for a fitted sheet with zipper, as shown and described.
FIG. 1: is the perspective view of the fitted sheet with zipper showing my new design;
FIG. 2: is an enlarged fragmentary perspective view of the corner portion of the fitted sheet with zipper of FIG. 1 with the flap in an open position thereof;
FIG. 3: is an enlarged fragmentary perspective view of the corner portion of the fitted sheet with zipper of FIG. 1 with the flap in a closed position thereof;
FIG. 4: is the front elevation view thereof;
FIG. 5: is the side elevation view thereof; and,
FIG. 6: is the top elevation view thereof.
The broken lines on the flap represent stitching. The broken line border surrounding FIGS. 2 and 3 shows the boundary of the enlarged fragmentary view and forms no part of the claim.