The ornamental design for a foldablechair, as shown and described.
FIG. 1 is a front perspective view of a foldable chair showing my new
design;
FIG. 2 is a top perspective view; and
FIG. 3 is a perspective view of the chair in folded condition.
The side of the chair not shown is a mirror image of the side shown in FIG.
1 while the undisclosed rear surface of the backrest is plain and
unornamented.