GUC to EUC super-absorbent cloth diaper nighttime boosters for when baby begins sleeping in longer stretches. Give your nighttime diaper a boost by adding an Overnighter insert. It’s made from eight layers of thirsty unbleached organic cotton and one layer of “stay-dry” fleece to keep your baby feeling comfortable through the night. Bonus 8 stay dry liners. Moisture-wicking washable fleece cloth diaper liners keep baby's skin feeling extra dry.