These popular socks from Thought are made from super soft bamboo and organic cotton. They really are a soft treat for your feet! Naturally, anti-bacterial and anti-fungal. 54% VISCOSE DERIVED FROM BAMBOO 22% ORGANIC COTTON* 22% RECYCLED POLYESTER** 2% ELASTANE *certified organic cotton. **Certified Global Recycled Standard Thought use natural,2 sustainable materials that are responsibly sourced.