Blockaroo Airplane Magnetic Foam Blocks Set (Age 3+)Blockaroo blocks are a new way to build. The soft foam magnetic blocks click together like magic, rotate 360 degrees, and always attract to each other, creating a multi sensory experience that kids love! Blockaroo builders are non toxic and exceed all international testing standards for safety. They are 100% dishwasher safe. Toss them in the dishwasher and theyll be sanitized and as good as new!