I claim the ornamental design for a shoulder belt universal advance, as shown and described.
FIG. 1 is a right side perspective view of the shoulder belt universal advance;
FIG. 2 is a front view of the design shown in FIG. 1;
FIG. 3 is a rear view of the design shown in FIG. 1;
FIG. 4 is a right side view of the design shown in FIG. 1;
FIG. 5 is a left side view of the design shown in FIG. 1;
FIG. 6 is a top view of the design shown in FIG. 1; and,
FIG. 7 is a bottom view of the design shown in FIG. 1.
Applicant expressly reserves the right to modify FIGS. 1-7 to include, in line drawing format, anyone or all of the features shown (i.e., shown in either dashed-lines or solid lines, where subject matter shown in dashed lines forms no part of the claimed invention) in FIGS. 1-7.