The ornamental design for an inflatable, swimming cap, or similar article, as shown and described.
FIG. 1 is a left side perspective view of an inflatable swimming cap, or
similar article showing my new design; the opposite side being a mirror
image thereof;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a sectional view of a portion of the band of the cap, taken along
the line 3-3 of FIG. 1; and