BlochUnisex Super Jazz Leather with Strong Elastic Slip On, High Durability, Neoprene Stretch Satin

Are these women's sizes? I am buying for a boy so I might need to do a size conversion.

Which size chart is correct?. There is one chart in the product picture and one Bloch size chart provided by Amazon.

I have a wide width. How do these shoes run?

Is this real leather?