Helmet

FIG. 1 is a front perspective view of a helmet showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a second side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines within the figure views are for the purpose of illustrating portions of the helmet which form no part of the claimed design.

The shade lines applied to the surfaces of the helmet represent a contrast in appearance and form no part of the claimed design.