FIG. 1 is a top perspective view of an inversely foldable umbrella shown in an open position showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a bottom perspective view thereof;
FIG. 9 is an enlarged top perspective view of the inversely foldable umbrella, shown in a closed position;
FIG. 10 is a front elevation view thereof;
FIG. 11 is a rear elevation view thereof;
FIG. 12 is a left side elevation view thereof;
FIG. 13 is a right side elevation view thereof;
FIG. 14 is a top plan view thereof; and,
FIG. 15 is a bottom plan view thereof.
The broken lines depict portions of the article that form no part of the claimed design.