lolla - fleece is used as the liner, close to baby's skin. it keeps baby feeling dry by 'wicking' the liquid through to the absorbent materials of the nappy. i cannot see why it would be used in the middle of a nappy??
i think you could try removing the non absorbent wadding to make it less bulky - then add a non attached booster to the pocket opening...a microfibre cloth or hemp or flannel or whatever
