97% Polyester, 3% spandex. These ankle socks are comfortable, durable, popular and unique. They are also part of the 2024/25 Boston Ballet dress code. Ideal for ballet, casual wear or for everday use. Made in China. Original Chanon sock. FITTING GUIDE: Fits according to sock size -- TOD/3-4.5; TOD/5 -- 6.5.