The ornamental design for a device for selfmassage, as shown and described.
FIG. 1 is a front view according to our design;
FIG. 2 is a back view of the design;
FIG. 3 is a left side view of the design, the right side view being a mirror image thereof;
FIG. 4 is a left, front perspective view of the design;
FIG. 5 is a top view of the design;
FIG. 6 is a bottom view of the design;
FIG. 7 is detailed view of the design, as taken from FIG. 2;
FIG. 8 is cross sectional view as taken along line 8-8 in FIG. 1;
FIG. 9 is an exploded view of the design from a left, underside perspective; and,
FIG. 10 is a top view of the exploded view of FIG. 9.
In the drawings, the broken lines show portions of a device for self massage that form no part of the Claim. The dash-dot broken lines shown in FIGS. 2 and 7 are for the purpose of showing enlarged areas, and form no part of the claimed design.