40 ZOOB pieces in a handy, vinyl zipper bag with an adjustable strap, 1 play pad, and 3 guides with instructions for 14 creations. Zoob is a unique building system with interlocking and moving parts. It?s five basic pieces snap, click, and pop together in more than 20 different ways and can rotate and lock in more than 100 different positions. Each set comes with an instruction booklet with explanations of all the possible Zoob connections. The booklet includes diagrams to build a number of models that will get your imagination started.