Made of polyester fiber and elastic fiber. Line material. 62% cotton, 30% polyester, 6% nylon, 2% elastane. Elasticated socks are designed to be flexible, Loose and uncomfortable, durable and wearless .Clothes are soft and comfortable. Breathable, odor-resistant and sweat-absorbent, ventilation reduces heat and keeps your feet dry throughout the day. The heel design is highly conformable to the heel and has a good wrap, make you more comfortable to wear. Suitable for sports, walking, running, gym, hiking, camping, hiking, marathon, outdoor activities, travel, etc.