Thing 1 and Thing 2 are here to delight you with these Dr. Seuss Thing 1 & Thing 2 Costume Knee High Socks. Each sock features its own smiling Thing with their iconic blue hair, in addition to red heel and toe detailing. We're sure that we don't have to tell you how to incorporate these fun socks into an outfit or a costume! Just like the Cat in the Hat shows us, having a big imagination is the key to success. The officially licensed knee-high socks are made from 68% acrylic, 30% nylon, and 2% spandex, and are 18" long.