Luvs Ultra Leakguards Diapers: * Features NightLock: Luvs" largest absorbency area ever helps lock away wetness, even overnight * Refastenable stretch tabs for a snug fit * Super absorbent * Big value! * Available sizes: Size 2 (108 count) for 12-18 lbs., Size 3 (104 count) for 16-28 lbs., Size 4 (88 count) for 22-37 lbs., Size 5 (74 count) for 27+ lbs.