Building developmental skills is simple with our wide selection of building blocks! Promote motor skills and creative development with the Deluxe Jumbo Cardboard Blocks 40 pc Building Set by Melissa & Doug. These durable building blocks allow children to experience constructive play at its best! This fun toddler building toy includes 40 durable cardboard blocks in 3 different sizes (largest block measures 12 x 6 x 3 inches) and primary colors. Build your own brick wall with these terrific cardboard blocks and have hours of imaginative play. The construction brick kit includes easy to follow instructions to assemble the blocks.