Boo! Shriek! Scream! Monsters have been a popular source of terror and unease in pop culture since the early days of story-telling! These monster pajama pants are sure to catch the attention of friends and family, as well as show off how much of a fan you are of these s! These pajama pants feature the monster known as The Mummy. The pants themselves are made of a soft 60% cotton and 40% polyester fabric blend, for casual wear and lounging about! These are the best!