25% nylon 【Selected Material ?70% merino wool, 25% nylon and 5% spandex, feel soft , have good elasticity and strong warmth preservation, no worry about deformation. 【Naturally Moisture Wicking】Designed with thickened loops inside, these outdoor hiking socks are super breathable and moisture wicking, keeping your feet dry, warm and comfortable every day. No smell, no stinky feet, even after a full super-active day. 【Thoughtful Design】With reinforcement design in heel and toe areas, these outdoor thermal socks are super wear resistant, and the shrink design on the sole of the foot can prevent socks from twisting, which provides a ultra-comfortable feeling for your feet. 【Multi Performance】KAVANYISO merino wool socks will be the right choice for strength and durability if you are hiking, trekking, walking, camping, climbing, running, backpacking, or travelling during spring, summer, winter or fall. 【Perfect Gift Choice】Our outdoor trail socks are the perfect solution for outdoor adventures, with stylish patterns and vibrant colors perfect for everyday wear, makes them the delicate present for hikers, outdoor walkers, and one size fits most men.