The ornamental design for a pillow with border of interleaved fins, as shown and described.
FIG. 1 is a front elevational view of a pillow with border of interleaved
fins showing my new design;
FIG. 2 is a top plan view thereof with side views and a bottom plan view
being identical; and,
FIG. 3 is an enlarged fragmentary front elevational view of a pair of
interleaved fins shown separately for clarity of illustration and with the
rear being identical.