Portable exercise system
US D546403 S1
The ornamental design for a portable exercise system, as shown and described herein.
FIG. 1 is a perspective view of portable exercise system, showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevational view, the rear elevational view being substantially a mirror image thereof;
FIG. 4 is a right side elevational view, the left side elevational view being substantially a mirror image thereof; and,
FIG. 5 is a bottom plan view thereof.