I bought these knee socks and never wore them. They have been in a drawer. Both are super warm, but the striped socks are pretty thick. I wear 8 1/2-9 in socks, and these would fit me. I believe both are cotton. The striped, thick socks could almost be wool, but I am not certain. Tags : Winter, Boots, Warm, Colorful, Teen, Juniors, Girl