These great inserts from Happy Heiny are made of super absorbent hemp/cotton fleece composed of 3 body layers plus one layer that forms a pocket area which holds the included oval booster. This means there are 7 layers in total in the wet zone, with the oval able to be positioned towards one end for boys, in the middle for girls and more ovals can be added if required. These inserts are great in Happy Heiny pocket nappies, Happy Hempy night nappies or any of our pocket nappy brands