Storage Case

FIG. 1 is a front side elevational view of an ornamental design for a storage case;

FIG. 2 is a rear side elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The longer dashed broken lines in the Figures show portions of the storage case that form no part of the claimed design. The shorter dashed broken lines in the Figures illustrate stitching and form part of the claimed design.