The ornamental design for a pair of swimmingfins, as shown and described.
FIG. 1 is an isometric view of a pair of swimming fins according to the present invention.
FIG. 2 is a top view of the pair of swimming fins shown in FIG. 1.
FIG. 3 is a bottom view of the pair of swimming fins shown in FIG. 1.
FIG. 4 is a back view of the pair of swimming fins shown in FIG. 1.
FIG. 5 is a front view of the pair of swimming fins shown in FIG. 1.
FIG. 6 is a view from the left side of the right one of the pair of swimming fins shown in FIG. 1, with the right side of the left one thereof being a mirror image thereof; and,
FIG. 7 is a view from the right side of the right one of the pair of swimming fins shown in FIG. 1, with the left side of the left one thereof being a mirror image thereof.