Just gently pull back the rubber band and then let go, little kids will be excited to watch the cars race forward.

Children will learn some basic knowledge of physics and engineering to facilitate their future studies.

The average attention span of a 6-year-old child is 12-18 minutes.

All models in this kit can be built within 20 minutes and the bricks come in only 5 colors to stimulate their concentration.

Made of safe ABS plastic, with smooth edges that avoid scratching hands.

Fun building blocks are perfect for building family memories.