Kongming lock is a traditional Chinese intellectual toy, originating from mortise and tenon structure in ancient architecture. It's intangible cultural heritage & ancient wisdom. mideer neon series is made of ABS material with smooth touch. Solid structure & easy interlock for kids. It can help improve kids' logical thinking, imagination, concentration, patience. 

• Age: 3
• Including: 1 puzzle, 1 instruction
• Piece Count: 6 pieces
• Colors: Yellow
• Material: ABS