These are Officially licensed Dr. Suess socks, guaranteed or your money back!. Dr. Suess is the author of the extremely popular children's books that inspired wonder and magic and millions of readers' minds! This Dr. Seuss sock set features 5 pairs with each set having their own design from one of the magical books in the collection, The Cat In The Hat. There is Thing 1, and Thing 2, and various The Cat in the Hat designs on the socks. Made of soft 98% Polyester, 2% Spandex. These are sock size 7-9 which fits children's shoe size 10-4 best.