COZY MATERIAL: 98% Polyester+2% Spandex. SIZE FIT: Our custom number socks available in two sizes to choose from(6-9/10-13 Years), suits for Children and Teens. Just choose the best suitable size for your child or great gifts to your friends’ kids. Let them become cool guys with these number socks! BEST CHOICE FOR BIRTHDAY: The number combination varies from ?00? to ?99? for you to choose from. Unique number represents a unique day, just choose your own number for yourself. And Colorfox Sports Number Socks have two colors (Black & Navy) to choose from. Here is the link of the BLACK one: http://a.co/d/1Hy9Xzm MULTI- FUNCTION NUMBER SOCKS: Our custom team number socks are suitable for soccer, football, basketball, volleyball and all kind of athletic activities. These number socks are perfect for everyday use at home or during the big game! And you can also pair these with your favourite clothes and shoes. SUPERIOR CUSTOMER SERVICE: All Colorfox products come with 100% MONEY BACK GUARANTEE. If you??re not satisfied with our team sports socks, just return it to us within 30 DAYS along with your proof of purchase for a hassle-free full refund. Thanks for choosing us!