Socks made by Conscious Step help people, animals and the environment. These are Socks that Support Mental Health raise funds for the National Alliance on Mental Illness (USA). Medium fits USA Men's 8-13, USA Women’s 9-14. Small fits USA Men’s 4-8, USA Women’s 5-9. 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.