Originally Posted by jeemmerling621

I had a bubble on my mat and laid it out on our walk leading up to the front door. It was hot as blazes (108 degrees Fahrenheit), so i left it out there for about 45 minutes it was laying as flat as the day I got it.

So if you're having the kind of heat we're having here in Ohio, just leave it outside on a completely flat surface, like the concrete walkway.