Thumb support for a mouse

FIG. 1 is a front perspective view of a thumb support for a mouse showing our new design;

FIG. 2 is an elevated rear perspective view thereof;

FIG. 3 is a left side rear perspective view thereof;

FIG. 4 is a left side front perspective view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a right side view thereof;

FIG. 8 is a left side view thereof;

FIG. 9 is a top view thereof; and,

FIG. 10 is a bottom view thereof.

The even dash broken lines depict portions of the thumb support for a mouse which form no part of the claimed design. The dot-dash broken lines used in FIGS. 1 - 10 represent an unclaimed boundary of the claim and form no part of the claimed design.