Luvs Ultra Leakguards Diapers (Choose Your Size) - Sam's Club
These diapers are also soft and comfortable as a result of the Leakguard core. They're available in various sizes to meet your babies needs, including Luvs size 4 and Luvs size 3. What Makes Luvs Ultra Leakguards Diapers Different from the Rest? Luvs Ultra Leakguards use NightLock Plus technology, which makes them super absorbent.