Magnetic Me - Day At The Museum Gown w/ hatthe open bottom gown and hat set is a wardrobe staple for newborns who require constant diaper changes (aka all of them). with an opening at the bottom (thank you, cinched elastic band), babys top half stays warm during the diaper switcheroo: pull the gown up, put on a freshy, and youre done. other amazing features: organic cotton, built in mitten cuffs, magnets at the top for easy over the head dressing.