100% Polyester. One size fits most 12 and up. Knee high socks measure approximately 22 Inches long. Choice of 6 designs. Machine Wash. Add some unique flair to your Halloween attire with your choice of 6 styles of these awesome Halloween themed socks. All are 100% Polyester, bright and colorful and one size fits most 12 and up. Socks measure approximately 22 inches from top to bottom.