Gee, thank you all for your responses. If they ship the Olfa mat flat then that would be a solution for me.
I cannot buy mats here in Argentina, they don't sell them. But my DMIL and DSIL are going to visit my niece in Florida in October or November so I can order the mat on line and have it sent to her house and they can bring it back with them, in the box, when they come.