The ornamental design of a safetyhelmet with earmuffs for hearing protection and fastening device therefor, as shown and described.
FIG. 1 is a side view of a safety helmet with ear muffs for hearing
protection and fastening device therefor embodying my new design;
FIG. 2 is a front view of the safety helmet with ear muffs as shown in FIG.
1 and;
FIG. 3 is a bottom view of the safety helmet shown in FIGS. 1 and 2 with
the ear muffs removed from the ear muff supports for convenience of
illustration.