This idea was in the Hometalk newsletter earlier this month. I hope it's the same one you're thinking about. Wishing you the best.
Fyi, interior foam or fill will mold if left outside and gets wet. Nice idea but not practical.
Hi Deborah. I'm Cindy. I see that your question has been answered. But I would still like to share a great resource with you. If you are ever wanting to see a past project, click on the little blue house at the top of this page, left-hand corner. Also, check out "Explore Projects" for even more.
Hi Deborah: There is a special foam for outdoor use. It won't let water build up, it just drains out, but is very comfortable. And, I'd still cover it with outdoor fabric. Good luck