The ornamental design for a shower safetydevice, as shown.
This patent application claims the benefit of application Ser. No. 14/014,054 filed Aug. 29, 13 entitled Shower Safety System, which application is incorporated in its entirety here by this reference.
FIG. 1 is a perspective view of a shower safety device showing my new design;
FIG. 2 is a right side elevational view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a top plan view thereof; and
FIG. 6 is a front elevational view thereof; and,
FIG. 7 is a rear elevational view thereof.
The broken lines depict portions of the shower safety device that form no part of the claimed design.