The People Blocks Classic Colors 31 piece set comes with the pieces and play mat you need to build your own People Blocks universe. This is the perfect set to start building with. It comes in our wildly popular solid colors and use our unique magnet design so that building is fun for all ages. 18 Months – People Blocks are perfectly crafted to fit in a child’s hand and allows them to stack easily with the power of magnets 2 years – Children will develop beyond stacking to matching and pattern building as their imagination develops. Children will explore different angles, unique combinations, and asymmetrical designs. 3 years – Children begin to make anything and everything they can think of and see in their everyday activities. The possibilities are as unlimited as their young imaginations. 4+ years – With the power of magnets, your child’s creativity will be seen in their own unique designs.