These leather slippers have our daughter fitted right away. Although these ages must not be relied upon, but you can get by the shoe size of the child addressed ... We have the slippers ordered in size 21/22, which according to the description of 12 - should fit 18 months, our daughter has, however, with almost 2, 5 years only shoe size 21 and the slippers still fit perfectly). The workmanship is very good, the collar does not constrict and for this price are those shoes do not get in our environment (usually cost more than twice). We still have another model ordered (the gray shoes with pink cat), for which also the previously valid written.