Earplug

FIG. 1 is a top, front, and right perspective view of a first embodiment of the earplug showing our new design; FIG. 2 is a bottom, rear, and left perspective view thereof; FIG. 3 is a front view thereof; FIG. 4 is a rear view thereof; FIG. 5 is a left side view thereof; FIG. 6 is a right side view thereof; FIG. 7 is a top view thereof; FIG. 8 is a bottom view thereof; FIG. 9 is a top, front, and right perspective view of a second embodiment of the earplug. FIG. 10 is a bottom, rear, and left perspective view thereof; FIG. 11 is a front view thereof; FIG. 12 is a rear view thereof; FIG. 13 is a left side view thereof; FIG. 14 is a right side view thereof; FIG. 15 is a top view thereof; and, FIG. 16 is a bottom view thereof. The broken lines shown in FIGS. 1 - 16 illustrate portions of the earplug that form no part of the claimed design.