Shoe size USSR used the European (Paris point) system, but the Mondopoint metric system was introduced in 1980s by GOST 24382-80 "Sizes of Sport Shoes" and GOST 11373-88 "Shoe Sizes", and lately by GOST R 58149-2018. Foot lengths are aligned to 5 mm and 7.5 mm intervals. Standard metric foot sizes can be converted to the nearest Paris point ( cm) sizes using approximate conversion tables; shoes can be marked with both foot length in mm, as for Pointe ballet shoe sizes, and/or last length in European Paris point sizes (although such converted 'Stichmass' sizes typically come ½ to 1 size smaller
Shoe tree Shoe tree A shoe tree is a device approximating the shape of a foot that is placed inside a shoe to preserve its shape, stop it from developing creases and thereby extend the life of the shoe. It is a reusable alternative to wadded rags or newspapers. Perhaps more important than maintaining the shape, shoe trees also play a crucial part of wicking away leather-damaging moisture from the inside. This is especially important when shoes are worn without socks, as the sweat absorbed by the leather can lead to lining rot. Higher quality shoe trees are made from solid wood,