The ornamental design for an airbaglumbarsupportpillow, as shown and described.
FIG. 1 is a perspective view of my new design for an airbag lumbar support pillow formed by two side airbags joined by a fused middle seam extending partway and an air passage;
FIG. 2 is a front elevation view of the article shown in FIG. 1, and to which the rear elevation view is the same.
FIG. 3 is a left side view of the article shown in FIG. 1, and to which the right side view is the same;
FIG. 4 is a top view of the article shown in FIG. 1;
FIG. 5 is a bottom view of the article shown in FIG. 1; and,
FIG. 6 is a view showing the article in use by a seated person (in phantom lines).
The broken lines are for environmental purposes only and form no part of the claimed design.