Eco-conscious over-the-knee socks. 80% bamboo rayon, 16% polyester, 4% elastane Size 5-9These socks were made with bamboo rayon: a better for the planet fabric. Bamboo is one of the fastest growing plants in the world, and grows without the use of pesticides, making it a sustainable raw material. Naturally antibacterial. | Ardene Bamboo Rayon Over-the-Knee Socks in Black | Polyester/Rayon/Elastane | Eco-Conscious