adidas Originalsadidas Men's Swift Run Sneaker, Core White/Core White/Black, 4

CAn a girl wear these

These shoes say 100% leather. But then further down the description it says synthetic leather upper for durability. So are these real leather or not?

How big is it to wear 36 yards shoes at ordinary times?

Are these only for the shower? Can you use them outside? Are they comfortable enough to stand on them for a couple hours?