The LEGO Batman Movie: Chaos in Gotham City book and Tartan minifigure set is a collectible item from 2017, featuring a 2-inch long book with a LEGO minifigure of Batman inside. This set is part of The LEGO Batman Movie subtheme, making it a must-have for fans of the Batman franchise. The plastic construction and detailed design of both the book and minifigure make it a valuable addition to any LEGO collection, suitable for ages 7 and up.