The Zodiac Constellation Socks are made of high-quality cotton blended with polyester to make a comfortable, stretchy sock fit to the wearer. Keep your feet comfortable and warm as you study the cosmos with these Constellation Socks! Why you'll love it: Stretchy: These socks fit women's US shoe size 5-10 and men's shoe size 3.5-8.5, making a sock that fits a variety of sizes. Colorful: Designed with vibrant complimentary colors to make any outfit pop Certified quality: Certified by OEKO-TEX Standard 100, these socks are not only cute, they are free of any harmful chemicals, making a sensible and stylish choice. Ideal gift: The socks are neatly packed into a card, making for a gift set that is ready to be personalized! This gift set is perfect for the sock collector or astronomer in your life!