From the Dr. Seuss Cat in the Hat Costume Collection. Dr. Seuss Thing #'s 0-9 Costume Kit. Set includes felt die cut numbers 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9. The back of each number has hook-and-loop fabric used to attach to your costume. These numbers are a great addition to any Dr. Seuss Thing Costume! Each number measures approximately 4.75” tall. This is an officially licensed Dr. Seuss™ costume accessory.