With both pieces made from 100% Cotton, this set of pajamas for men features a white t-shirt adorned with the Superman shield symbol and a pair of soft, blue lounge pants adorned with Superman symbols AND logos.  YAY!  The Superman Lounge Pants feature a functional button-fly, a covered elastic waistband and a drawstring tie for a secure, comfortable fit.  Now Superman doesn't really require sleep, but to put Lois' mind at ease....he wears the Sleep Set, crawls into bed and...pretends not to hear the screaming passengers in a plane going down in Chile.  Wow, that's a different direction there for ya.'