FIG. 1 is a perspective view of the ornamental design of a liquid pouch showing our new design;

FIG. 2 is a front view of the liquid pouch;

FIG. 3 is a side view of the liquid pouch;

FIG. 4 is a top view of the liquid pouch;

FIG. 5 is a bottom view of the liquid pouch; and,

FIG. 6 is a perspective view of the liquid pouch, the difference being the elimination of a top portion of the liquid pouch.