Set of 2 Sleep N' Plays are made from a cozy, 100% cotton jersey. Whether your little one is napping soundly or romping around the nursery, the breathable fabric ensures he or she stays cool and comfortable. The front zipper opening makes dressing easier for busy moms. Baby's chin stays protected with a soft tab zipper cover sewn in at the neckline to cover the zipper. You'll appreciate how simple the machine wash and dry fabric makes cleaning these items. Machine wash, tumble dry. Size: 0-3 mo.