I claim the new and ornamental design for a prosthetic phallus retention harness with straps, as shown.
FIG. 1 is a view in front elevation of a prosthetic phallus retention harness with straps showing my new design;
FIG. 2 is a view in rear elevation of the prosthetic phallus retention harness with straps of FIG. 1;
FIG. 3 is a top perspective view of the prosthetic phallus retention harness with straps of FIG. 1;
FIG. 4 is a bottom plan view of the prosthetic phallus retention harness with straps of FIG. 1;
FIG. 5 is a view in front elevation of the prosthetic phallus retention harness with straps of FIG. 1 in an inside-out configuration;
FIG. 6 is a view in rear elevation of the prosthetic phallus retention harness with straps of FIG. 1 in an inside-out configuration;
FIG. 7 is a view in front elevation of the prosthetic phallus retention harness with straps of FIG. 1 with the front flaps opened; and,
FIG. 8 is a view in front elevation of the prosthetic phallus retention harness with straps of FIG. 1 in an inside-out configuration with the rear flap opened.
The broken lines are stitch lines and form a part of the claimed design.