REEFAnchor Men's Beach Flip Flop, Water Friendly, Cushioning Heel Airbag

I have a very flat foot and arch support bruise my feet, I need something without the big lump in the arch Does this have a pronounced arch support or

Where are these made?

Does it have the opener?

Hola, yo soy talla 9.5 US que talla seria en las sandalias ?