To paraphrase the classic joke, there are 10 types of people who buy binary code socks: people who understand binary, and people who don't. Get these binary socks for men for that first type of person. If he's a math nerd, a computer programmer or just a numbers guy, he'll love wearing these socks with green ones and zeros on a black background. Fits men's shoe sizes 8 to 13. 63% cotton, 34% nylon, and 3% lycra. Made in Korea.