My insulation boards are tongue and groved so they stay together really well. I covered mine in flannel. Wrapped the flannel to the back and used a stapler (open it up and just go for it). I have had it for 6 years. I use a lint roller on it every so often, but haven't needed to wash the flannel yet. Also, I moved twice. With some help, we pulled it apart enough to we could fold the sides together, flannel in the center. You will love it!