
Develop focus and precision! Master each of the four challenge levels or mix the layers to create unique towers. Spring Blocks are ideal for building stable and dynamic structures. Each layer card is printed with shapes that guide children while building. Includes: 24 Spring Blocks that measure 1" x 1.25" x 2.5", and 28 layer cards that measure 6.75" x 6.75" . Ages 4 and up.