FIG. 1 is a perspective view of a sock showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is right side view;

FIG. 5 is left side view;

FIG. 6 is top view; and,

FIG. 7 is bottom view.

The broken line showing of bottom details in FIG. 7 is included for the purpose of showing environmental portions of the sock and forms no part of the claimed design.