Best Bottom Overnight Inserts are perfect for adding extra absorbency to your favorite Best Bottom inserts. They are great for babies and toddlers who out-pee their diapers during naps or nighttime, as that extra layer of absorbency does the trick!They’re easy to use, as they simply snap underneath the other insert. The hourglass shape allows for maximum absorbency while keeping it trim around the legs. Made with six layers of thirsty microfiber these inserts are made to be used in conjunction with your favorite Best Bottom Insert to keep your baby leak free overnight.As this does not include a layer of our no-pill fleece it’s important to note that these must be layered underneath another insert.Microfiber itself should not rest on a baby's gentle skin, as it will quickly dry it out. Best Bottom Overnight Microfiber Inserts offer our Super Absorbency, which is usually sufficient absorbency for even the most hydrated baby!