I bought a set of 5 pairs for 1100 yen online last month. When they arrived, I felt like they might be a little small for my child, and after my child wore one pair twice, they seemed a bit tight. My child wears 22cm sneakers. The remaining 4 pairs are unused and have been stored at home. For anyone who can use them. Thank you!(^^) 18-22cm ……… 9-12 years old 【Material】 Outer yarn: 100% cotton ☆◆※Please read the handling instructions carefully before use. ●There is a size mark on the sole of the socks, but there is no problem with the quality. ●The size feeling varies from person to person, so the corresponding size and age are just a guide. Please choose the size according to the shape of your feet. ●Depending on the type (design, material, elasticity, and the environment during ironing) and the production period, the size of the socks may vary slightly even if they are the same size. Please note. ●The displayed dimensions are approximate. There may be slight differences from the actual product dimensions. Please note. ●Due to the nature of the product, threads may stick out from the switching parts, patterned parts, and the top of the heel, but there is no problem with the quality. Cutting these threads short may cause fraying, so please be careful. ●In the production process by machine, there may be seams in the threads when weaving the fabric, looseness, roughness, or unfinished thread ends, but there is no problem with the quality. ●Do not tumble dry. ●The images of the products are processed as close to the actual product as possible, but the color may differ slightly from the actual product depending on the monitor environment you are viewing, so please be aware of this. ※We may refuse returns or exchanges for the above reasons.※ Material notes: Cotton increases in strength when wet, but brightly colored items tend to become whitish with repeated washing, so it is recommended to hand wash or put them in a net, especially for fashionable clothes.