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 no-show ankle sock set features 6 pairs with each set having their own design from one of the magical books such as Green Eggs And Ham, The Grinch Who Stole Christmas, One Fish Two Fish Red Fish Blue Fish, Cat In The Hat, Fox in Sicks, and a Thing 1 Thing 2 design inspired from characterin the Cat in the Hat book. You can mix and match for those quirky feeling days. Made of soft 98% Polyester, 2% Spandex. These are sock size 9-11 which fits men's shoe size 5-9 best, and women's shoe size 5-10 best