These were often worn by a child who loves the Shinkansen (bullet train). They show signs of use, and the white parts are particularly dirty. The Hayabusa socks are crew length and slightly longer, while the others are ankle length. If you love trains and don't mind the dirt, why not? *Regarding size* There is no size marking, but they were worn at the same time as 15-20cm Tetsushita socks, so I'm estimating them to be around 17cm. *Price reduced* *These are used children's clothes.* *Recycled packaging materials may be used.* *Shipping may be changed from Rakuraku Mercari to Yu-Yu Mercari.*