We searched high and low to find the very best corrugated blocks. This 40 piece set of Giant Building Blocks is lightweight, safe, colorful and sturdy enough for little ones to stand on. Provides hours of imaginative play. Easy fold assembly required. Set includes: 8 large (12"x6"x3") red blocks, 8 medium (6"x6"x3") yellow blocks and 24 small (6"x3"x3") blue blocks. Ages 18 months & up.