Get creative with the LeapBuilders® 81-Piece Jumbo Blocks Box™! Build, create and learn with this 81-piece block set. Kids can build using the easy-to-hold building blocks and double-sided learning blocks that feature letters and objects to build animals, vehicles, towers and more. For even more fun, combine with other LeapBuilders® sets (sold separately) that include an electronic Smart Star™ cube. Insert the 13 double-sided learning blocks into the interactive Smart Star™ and it will respond with fun sounds, educational songs and encouraging phrases that enhance building play with learning content. When you're done, store everything inside the box. Get building with smart blocks for smart kids!