FIG. 1 is a perspective view of the spa apparatus;
FIG. 2 is a right side view of the design of FIG. 1, the left view being a mirror image of the right view;
FIG. 3 is a front view of the spa apparatus;
FIG. 4 is a rear view of the spa apparatus; and,
FIG. 5 is a top view of the spa apparatus.
The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design.