I placed it on the floor and it seemed to be perfect except that it really smelled badly - a toxic smell. I placed it outside for a few days and it curled up into 5 angled object. Some of the smell is gone but it's still kinked. One is in use and the other is still unwinding.
I only weigh 150 lb and I am using a executive chair with 5 rollers. the weight of the chair on the mat causes depressions making it difficult to roll around on the mat.
Chair rollers leave indentation on mat but dents eventually disappear. Label adhesive is impossible to remove. Do not know if it will easily crack because mat is new.