Note: Sometimes a shoe is made of leather on the outside, but made of synthetic materials on the inside. This often makes a shoe cheaper, but it also has consequences for the quality. There are also a number of things you can look out for when purchasing new shoes.
For example, consider a removable footbed. If you (in the future) need your own insoles, you don't have to buy a whole new pair of shoes immediately. When you work in aviation or hospitality, other characteristics may also be important. A non-slip sole for example. This gives you a firm grip on the floor and ensures that you do not slip during work.