Suction construction! High-quality silicone-rubber suction cup connectors make this creative construction set's pieces as much fun to pull apart as to put together (great incentive to keep going)! Strong connections create a resistance that's fun to overcome, resulting in a rewarding "pop." Plus, the pieces can be connected not only to each other but to almost anything else (walls, windows, bathtubs, tabletops& ) so kids can construct (or deconstruct) almost anywhere. Suction construction! High-quality silicone-rubber suction cup pieces Fun to put together and pull apart Pieces make a fun popping sound when pulled apart Pieces stick to walls, windows, tabletops, etc. 24 pieces.