I claim the ornamental design for a storage vest, as shown and described.
FIG. 1 is a perspective view of a storage vest, the storage vest being shown in use, worn on an individual;
FIG. 2 is a perspective view of the storage vest;
FIG. 3 is a right side view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a rear view thereof;
FIG. 7 is a top view thereof; and,
FIG. 8 is a bottom view thereof.
The evenly spaced broken lines shown on the storage vest represents stitch lines and are part of the claimed design. The dash-dot-dash-dot broken lines represent elements which form no part of the claimed design, including the individual, buckles, and the zipper tails.