1 Cloth Diaper, 2 Styles (pocket or Two-in-one), 3 Size (small, medium, and large) Econappi is a one-size PUL pocket diaper lined with organic cotton velour and can be used either as a pocket or as an all-in-two diaper by laying the insert on top of the diaper. It comes with a one-size insert made with 2 layers of organic cotton velour and 2 layers of hemp terry. When trifolded and snapped together, it creates 6 layers of absorption, and only soft organic cotton touches the baby's skin.