These are Officially Licensed Dungeons and Dragons Pajama Pants. D&D is a fantasy tabletop role-playing game originally popular in the '70s and '80s but has seen a resurgence as it has been featured on a popular Netflix show. It is widely considered the beginning of modern role-playing games. Each person is assigned a character as they embark on an imaginary adventure with a fantasy setting. This Dungeons and Dragons Cotton Pajama Sleep Pants feature an allover pattern of a game dice design. These are made of a super soft 92% polyester / 8% spandex blend; this is the newest standard in top quality fabric for sleep pants.