CFCL Socks Size 3: 23-25 cm Set of 2 New, Unused Product Details These socks feature a unique silhouette created by alternating two different types of ribs. Recycled polyester is used in areas that experience high stress, such as the toes and heels, while cotton, which is absorbent and gentle on the skin, is used in the other areas. Although they have a unique appearance, they have a classic silhouette that is easy to style when worn. They are also recommended as a gift for friends and loved ones. Product ID: CF010AI013, CF000AI022 Materials and Care Cotton 65% (using organic cotton), Polyester 30% (of which 53% is recycled polyester), Polyurethane 5% Machine washable Made in Japan