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). Small fits women’s US shoe sizes 5-9, men's US shoe sizes 4-8, and EU shoe sizes 36-40. • 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.