21 Overnight Pull-Ups Potty Training Underwear for Boys, size 2T-3T (21 training pants total) Absorbs more than diapers* with extra absorbency for up to 12 hours of overnight protection Pull-Ups is the only potty training pant designed specifically for nighttime Refastenable, easy-open sides make nighttime changes easy Soft, stretchy sides that slide up and down for an underwear-like fit to promote Big Kid independence