These are food grade plastic mats. They are great for practicing since they are easy to wash and they provide a large surface.
The mats are 15" by 12" and they can easily be rolled up for storage.
They will come rolled or folded inside your package, so they might have a few creases. You might want to cut each mat in half
One of the surfaces of the mat is rugged, which helps hold the paint better and get a more skin like surface. This are not as goo as the printed mats since they don't hold the paint as well and they are not as sturdy, but they are a more affordable option if you are just looking into just trying to see if you like painting on mats.