Adir Corp.Professional Self Reversible Healing Cutting Mat, 18 by 24-Inch, Green/Black

Mine just arrived and it is bent to the point it is unusable. Will it flatten out by itself, or do I return it?

is there a cm gride line?

Does it show numbers by the inch 123-to the 40 inch ?

Is this mat flexible enough so I can roll it to put in my suitcase to take where I live now?