This OPTIONAL absorbent insert designed for the Tiny Tush Elite One-Size Pocket Diaper is truly unique. It is designed to be absorbent, easy to launder and quick drying. It is a rectangular shaped, 100% cotton, two ply insert 10" wide x 16.5" long. By folding in different directions, this absorbent liner can be used for all size adjustments of the Tiny Tush Elite One-Size Pocket Diaper.