An amazing sock, perfect for hiking, technologically advanced, made with Primaloft Eco Polyester: ecofriendly and economical. Features: lycra, Men's trilayer midweight hiker, Trilayer knit technology layers both synthetic and natural yarns in a way that improves moisture management, comfort and durability, Primaloft blends 50% virgin fibers and 50% recycled fibers to create a high loft performance insulation, Crew height, medium full cushion 50% Primaloft Eco Polyester yarn, 25% merino, 15% nylon, 10% lycra |