These black "Cancer Sucks" socks are crew-length performance socks that are great for wearing at cancer awareness marathons and 5Ks. Made with 75 percent ultra-wicking, micro-denier acrylic, 15 percent nylon and 10 percent spandex, these socks are designed for exceptional comfort and strength. They also feature "stretch-to-fit" sizing and an Easy-Fit Cuff for a perfect fit on any foot. The "Cancer Sucks" socks come in two sizes - small/medium (fits ladies' shoe size 6-10 or men's shoe size 5-9) and large/extra-large (fits men's shoe size 9-13 or ladies' shoe size 10-14). Made in the U.S. Also available in light pink with bright pink font.