Not only are these rainbow knee socks for kids beautiful, they also shine and sparkle in the sun with metallic threads. If your kid is all about rainbows, give them a pair of shimmering rainbow socks to wear with all their other rainbow clothes. Two sizes fit kids ages 3 to 6 (shoe sizes 8 to 13) or 7 to 10 (shoe sizes 1 to 5). 74% cotton, 15% polyester, 8% metallic, 3% elastane. Made in Korea.