This is a great looking and extremely functional hardwood floor mat which I purchased for my home office. After receiving it, I promptly unrolled it, laid it down, and right away it laid flat, with no curled edges or rippling. Having it now for two days, this morning I noticed that it shifted a bit on my hardwood floors, from where I laid it originally. I read the only piece of paper it came with (picture included) and noticed the instructions to remove the "PP (clear) film” on the backside, befSee full review