The ornamental design for a waterbottleliner, as shown and described.
FIG. 1 is front elevational view of the water bottle liner in full lines
with a water bottle in broken lines representing environmental association
matter being for illustrative purposes only and forming no part of the
claimed invention, the rear elevational view being a mirror image of the
front view.
FIG. 2 is a right side elevational view thereof, the left side elevational
view being a mirror image of the right side view.
FIG. 3 is a top plan view of the water bottle liner; and,