If you are SpongeBob fan, these are this is for you! Often called jammeralls because they are overall styled jammies, they are made of a thick fleece fabric that is cozy and warm. The entire pajama is like a costume- designed to look like SpongeBob, from his white striped tube socks on up. This oensie has velcro side closures. The shoulder straps are adjustable and there are even two pockets. Incredible detailing makes this a great PJ, lounger, or costume for any Bikini Bottom fan!