The ornamental design for a low profilestoragepouch, as shown and described.
FIG. 1 is a perspective view of a low profile storage pouch showing my new design;
FIG. 2 is a front side elevational view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a left side view thereof; and,
FIG. 5 is a top plan view thereof.
The broken lines showing the rectangular portion of the pouch are for the purposes of illustrating environment and form no part of the claimed design. The evenly spaced broken lines represent stitching and are part of the claimed design.