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 in the USA 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.8 large red- 12 x 6 x 3 8 medium yellow- 6 x 6 x 3 24 small blue blocks- 6 x 3 x 3 For children 18 months and upParents Choice Classic Award; Dr. Toy Classic Award; National Parenting Publications Award; Parenting Magazine Toy Hall of Fame; AblePlay 4-star rated for children with cognitive disabilities; Mom`s Best Award Winner.