ImagiBRICKS Giant Building Blocks are an award-winning, traditional toy beloved by generations. Because they are open-ended, kids’ imaginations run high as they spend hours creating life-size structures. The blocks are strong enough to sit or stand on, yet lightweight enough for even the smallest preschooler to carry and stack. The assorted sets contain 3 colors and 3 size unit blocks that help little builders practice mathematical skills as they add the number of blocks stacked on top of each other, and the various-sized blocks can facilitate a conceptual understanding of fractions. Made from 50% recycled cardboard, the blocks have a smooth, drool-resistant coating for easy clean ups. These durable blocks will be around for years of imaginative play.