breathability and help avoid back leakage of baby's liquid poo. Baby's skin is extremely delicate and sensitive, so newborn and small sized nappies need to be extremely soft. The top sheet and back sheet of GOO.N NB are both specially treated to provide the softest ever comfort touch on babies bottom. GOO.N newborn nappies are not only much softer than NEWBORN sized nappies of other brands, its backsheet breathability is more than 35% higher than the second best one on the market, it enables the hot steam from baby's each pee to give out through the backsheet much more quickly. So please do not feel surprised when you feel the nappy's backsheet is a little damp, it means the hot steam did not vapourize onto your baby's bottom through nappy's top sheet. GOO.N NB is the thinnest NEWBORN sized nappy, it is about 20-40% thinner than other famous international brand. Super Thin & Soft Design offers your baby the best freedom for wriggling around.