These unisex socks are made of 75% combed cotton, 20% polyester, and 5% polyester spandex. Available in small and large sizes, they offer a comfortable fit for shoe sizes 5.5-9 and 8.5-12, respectively. In addition to their high-quality materials, these socks contribute to a good cause. Out of Print has donated over 5 million books to communities in need and supports literacy initiatives. By purchasing these socks, you can make a difference while enjoying their softness and durability.