Last for boot Unisex, american number 8, French scale number 39. Last developed by a company specialized in the production of last, used and tested in production. It can be used in specialized software like Shoemaster, Lectra, Romans for the CAD production of uppers, it can also be used in 3D modeling software, like Rhinoceros, for the production of soles. I have a large library of last, female, male, children, with the most varied heel heights and toes, if you need something special don't hesitate to send a message and I can post the last you need here.