Disney Animation Elsa Frozen Castle backpack Part Number RT393JX9 W18SSA465J Part Number RT393JX9 Ultra comfortable lightweight design with soft fit leather Lego Disney Animation Elsa Frozen Castle Disney Frozen Elsa confidence with a fun play experience and lets adults share the joy A Starter Brick gives kids a sturdy base to begin the build Each bag of bricks includes a character so play can start fast and the whole building set can be completed later Along with simple pictorial instructions made for kids who are just learning to read there is an easy intuitive building adventure on the LEGO Builder app Kids can zoom in rotate models in 3D save sets and track progress The buildable kit meets a child passion for Disney Frozen palace construction toys and makes a fun gift