Brand new, unused Okamoto Socks School Socks for Going to School Sneaker length, navy Set of 4 pairs Each set contains 2 pairs. Size: 16-18cm Durable toe and heel Double Deodorizing - Outer yarn: Silver ion treatment to suppress the growth of odor-causing bacteria! - Inner yarn: Deodorizing agent kneaded into the toe and heel, which are the source of foot odor, for increased deodorizing power!