Hard hat

FIG. 1 is a front perspective view of a hard hat, showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a rear view thereof; and,

FIG. 8 is a front view thereof.

The dot-dash broken lines adjacent to the shaded area represent unclaimed boundaries of the claimed design. The remainder of the broken lines are provided for environmental purposes only, and form no part of the claimed design.