Featuring 3 new pairs of socks, each gift box saves dogs through the Best Friends Animal Society. BFAS provides a sanctuary for thousands of dogs while advocating for 8 million animal shelters. This collection has one black, one grey and one light grey sock. Comes in size USA Men's 8-13, USA Women’s 9-14 (Medium). The socks are made of 75% Organic Cotton, 23% Polyamide, 2% Spandex and have a seamless toe. Machine wash warm and dry on low heat.