A holiday season version of the Teenage Mutant Ninja Turtles? Yes, please! TMNT Fans will appreciate this super fun, cool, comfortable and hella soft Teenage Mutant Ninja Turtles ugly Christmas sweater this holiday season. Featuring all four Turtles dressed up as their version of Santa Claus, this TMNT ugly Christmas sweater represents the perfect mash up of the fandom associated with the Teenage Mutant Ninja Turtles and the Christmas season.