21.5cm Used for about 10 months. (Please check the condition in the images) *Basketball shoes are not cheap, so why not use these for a child who is just starting basketball? A 5th-grade elementary school student with a 2 to 2.5E width wore these. They tried on various brands like Adidas and NIKE and said they were too tight, but these fit perfectly! They said it felt tighter compared to the shoes they usually wear, like "瞬足" (Shunsoku), but that's because they are basketball shoes. There are various options, but it seems that Asics shoes have the most room when trying on many pairs at the store. Shipping will involve compressing the shoes.