We have the technology! We can stretch them! We fulfilled our number one customer request and developed a way to create our awesome designs on stretchier socks. These babies can stretch up to 21 inches in circumference. One of our best sellers Chat Noir is now available in our unisex STRETCH-IT? size. We already knew that cats are the world’s best stretchers, but these knee high socks might even put their stretch to shame. 53% polyester, 45% cotton, 2% Spandex . Made in Korea. Approximately fits up to women’s shoe size 12 and men’s shoe size 13.