70% cotton 27% polyester 3% spandex Sizing Guidelines: 3-5T (Shoe Size 8.5-11 Little Kid) /// 6-8 Years (Shoe size 11-1 Little Kid) The stitching is very thin which is perfect for kids who are bothered by seams above their toes. Soft & comfortable cotton material is sweat absorbent and breathable, providing baby a comfortable feeling.Vibrant & bright colors make the rainbow stripes socks look so fashionable and lovely,which can match your kids'different outfits everyday. Funny Gift: Great choice for gift giving on Christmas, birthday and Thanksgiving, etc.