"The National Lampoon's Vacation" is a series of films that follow the hilarious Griswold family! "The Christmas Vacation" was no different! There are so many classic scenes and items from the film like the glass Moose Mug, Clark bringing home a Christmas tree that just happens to have a voracious Squirrel in it, and so much more! These pajama jogger pants feature the tracksuit scene from the movie. The pants themselves are made of a soft 60% cotton and 40% polyester fabric blend, for casual wear and lounging about!