These are old Japanese tabi shoes.
 
Tabi shoes are a product that has been worn in Japan from ancient times to the present day. In the old days, people wore tabi-like socks and then put on straw sandals or wore shoes outside.
 
When the soles of the shoes became sore, they were used while they were repaired with stitches and some other beautiful fragments.
 
Measures: 20cm (7in)