1. Discovery and Fun: This metal puzzle sparks your child's interest and thinking skills with immersive unlockable puzzles. As a result, they improve their motor skills, enhance their practical abilities, and learn patience and focus. 2. Relieve Stress: This metal puzzle helps you reduce stress and relax your mind by solving various challenges. You can test yourself by increasing the difficulty level according to your preference. The more you solve them, the better your concentration and mental strength will become. 3. NickelPlated Iron Material: The metal puzzle is made of nickelplated iron material, resistant to both low and temperatures. It has no sharp edges or corners to ensure your baby's safety. The toy is sturdy and shockproof. 4. Develop Skills: This metal puzzle allows children to solve puzzles more easily and enjoy playing with other kids. It also fosters their social skills, making them more cooperative and friendly.