Function: 1. Easy to build,changeable in shape 2. Creative magnetic lock design,more playable 3. Cognition of shape,exertion of imagination 4. Nature permanent magnet,not easy to fall off,random adsorption 5. Safety and environmental protection,no radiation 6. Consolidate logical thinking,strengthen exercise and effectively prevent Alzheimers disease Specifications: Amount: 28 pcs Package size: 31.9*23.3*4.5cm Material: ABS magnetic material Weight: 1kg
