If you feel drawn to these Mystic Moth Knee High Socks like a moth to a flame, don't worry. You're probably just mesmerized by the glow-in-the-dark threads in the design! 60% COTTON, 37% POLYESTER, 3% ELASTANE EXCLUSIVE OF ELASTIC.   Our threads are certified by OEKO-TEX® Standard 100  This means we leave out harmful chemicals to keep your skin safe and happy. Made in Korea ~ Designed in Portland, Oregon USA Approximately fits women's shoe size 5-10.