Review on 2-Pack Double Sided Background: Food Photography Backdrop for Gourmet Blogger Shots, Cosmetic Makeup Photos, Flat Lay Backdrop with Ins-Style Marble Textures, Rustic Grunge Wood Background - 4 Patterns by Sherrill Stockwell

I just used it for the first time. It took about 5 days to fix them. I unwrapped them first and placed them under a large, heavy box of weights with a piece of cloth underneath to keep them from scratching. After a few days, I gently shaped the ends and carefully twisted them the other way. I then folded them back up and left them loose in a 4x4 inch box. Now they're pretty flat. I laid one flat and attached the other to the MDF board to keep it level. I spilled water on them while taking pictures and they are definitely waterproof. Very glad I received them.