Gerber Baby Girls' Sleep and Play Kitty and Hearts Set 100% Cotton Machine Wash Soft 100% cotton interlock with allover print / ruffles on seat / applique / embroidery. Snaps completely down leg to make dressing and diaper changing super easy. Built-in feet to keep little toes cozy warm. Sleep n play available in newborn, 0-3, 3-6 and 6-9 month sizes.