70%Combed Cotton, 13%Polyester, 3% Nylon, 14% Elastic Fibers M (Men Shoe 10-12 US) ?2 x Black, 2 x Dark Blue, 1 x Olive? COSY & WARM: Blend with 70% thick combed cotton from welt to bottom, our socks are best for hiker seeking comfort and warmness in cold winter. MOISTURE WICKING & BREATHABLE: Come with six layers of yarn fiber struture, it wicks away your sweet rapidly, and breathes through 400 mesh holes. CUSHIONED & ANTI SLIP: Full thicked padded from toe to heal enhances heavy cushioned effect while jutting stiching bottom in prevent you from slipping. SUPPORT & SAFE: Tie with elasticity in arch and ankle parts, the socks reinforced support and protection during hiking, backpacking, trekking or walking. DURABLE: Possessing high resilience, tensile strength and heavy duty stiching , the socks can keep their shape and last a long time without any holes.