Kenetrek Montana Midweight Boot Height Hiking Sock Material: 33% Merino Wool, 33% Polypropylene, 26% Nylon, 5% Elastic, 3% Lycra Fits men's shoe sizes: Medium(5-8), Large(9-12), X-Large(13-15) Fits women's shoe sizes: Small(4-7), Medium(8-9), Large(10-11) Warm merino wool boot socks Ideal for long rides, hikes, hunting, othe ourdoor activities in colder conditions