FIG. 1 is a front, perspective view of a first embodiment of selected elements of a full-face helmet of my design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a front, perspective view of a second embodiment of selected elements of a full-face helmet of my design;

FIG. 8 is a front elevational view thereof;

FIG. 9 is a top plan view thereof;

FIG. 10 is a right side elevational view thereof;

FIG. 11 is a left side elevational view thereof; and,

FIG. 12 is a rear elevational view thereof.

In FIGS. 1-12, the dotted lines showing structure form no part of the claimed design.