Water impervious chair cushion

A cushion including a cushion fill enclosed by a cushion shell, comprising:

• the cushion shell comprising a shell upper surface containing no seams and at least one shell side surface, the shell upper surface and the at least one shell side surface each fabricated from a water impervious material;
• and
• the cushion fill fabricated from a non-water absorbing material and having a shape that forms a natural convex curvature profile in the shell upper surface when enclosed by the cushion fill,
• wherein the at least one side surface includes one or more portions joined together along a non-exposed side seam including stitching that is not visible to a viewer from outside of the cushion shell.

A cushion including a cushion fill enclosed by a cushion shell, comprising:

• the cushion shell comprising a shell upper surface containing no seams and at least one shell side surface, the shell upper surface and the at least one shell side surface each fabricated from a water impervious material;
• and
• the cushion fill fabricated from a non-water absorbing material and having a shape that forms a natural convex curvature profile in the shell upper surface when enclosed by the cushion fill,
• wherein the cushion shell further includes a shell bottom surface fabricated from a water pervious material, the shell bottom surface joined to the side surface along a non-exposed bottom edge seam.