It took several days for the Chair Mat to uncurl and lay flat. Chair Mat was flat in store - curing occurred during transit while rolled-up in my car. I recommend rolling "bottom in" such that the curl can be managed by placing the chair or other heavy object to assist with uncurling.
I purchased this matt 3 years ago but didn't know what kind it was to replace it. I went through records from 3 years ago to find the receipt so I could order the same one. I found it ordered it and very happy.
Good product but whoever shipped it put shipping tape on the top side of floor mat. we tried to clean it but very difficult to get off so sticky residue collects dirt on the mat from shoes and chairs. i would recommend if it was shipped differently so it doesnt have tape sticky on it.