Brown Dog Hosiery Men's Socks - Pamlico Della Blue are 70% cotton, 28% nylon and 2% spandex and are made in North Carolina in the United States. They are sock size 10-13 and fit shoe sizes US 8-1/2-12. They have detailed fine gauge knitting, 168 needle count, a supportive arch band, a self-adjusting welt top, a comfortable seamless toe and ring-spun combed cotton. Machine wash warm and tumble dry.