Robot electric block control block boy toy building blocks1. Quantity of materials and bricks: high quality ABS plastic building blocks 2. Educational tools: Miniature building blocks help to improve the general and fine motor skills, spatial awareness and storytelling skills of the budding builders. 3. Quality and safety: The mini block is made of high quality durable non toxic green material, flexible and not easy to damage. Their smooth surface and rounded corner design make them safe for children.