Wow, look what I can do! From building a tower, to a fortress or a maze, eco-build a block set will inspire imaginations to soar. These blocks are fun for all ages; they build confidence, teamwork and help with gross motor skills. Get ready to watch your worlds come to life. These 100% recycled cardboard blocks come packaged in a reusable carrying case and are ready for play. With four unique sizes, use them as is or add your artful touch for hours of creative play. eco-build a block set includes 2 extra large boxes, 4 large, 8 medium and 16 small boxes. Carrying case measures 16.5"H x 20"W x 4.25"D.