HEXACUS is an exploration in creativity and fun for the entire family. Just sort by size and color, then stack, nest, and balance to create a wide variety of patterns and shapes. The included idea booklet shows over 100 examples of easy to challenging patterns and shapes to build. HEXACUS pieces are easy to hold and the unique hexagonal cross section and size progression from large to small allows for a variety of ways to stack the pieces. When a smaller HEXACUS piece, or pieces, can fit inside a larger HEXACUS piece, it's called nesting. Discover all the ways HEXACUS pieces can nest. It's fun to place HEXACUS pieces side by side on a flat surface and create colorful patterns. Details: 12 assorted color blocks and pieces Includes building examples Safe, easy-to-hold colorful blocks For ages 2 and up