Say goodnight to those midnight diaper changes! Huggies Overnites diapers size 6 are our most absorbent overnight diaper to help eliminate leaks, offering up to 12 hours of protection for your baby. Huggies LEAK LOCK* design in our nighttime diaper keeps wetness where it belongs until dawn to help maintain healthy skin. Huggies Overnites are a simple way to help everybody get a better night sleep.