Took it out to use it and I noticed it smelled pretty bad. Very much like chemicals. It was pretty gross to have my face so close to it at times. I thought I would just let it air out, so on my way to the garage (it smelled that bad) I grabbed the cardboard that came with it and noticed this:
Warning: This mat contains chemicals (recognized by the state of California) known to cause Cancer and/or birth defects/fertility issues.