I felt that I needed a small mat on the carpet in the bedroom where my computer is located so the carpet would not get worn out. I am very satisfied with the little mat that I purchased and would hightly recommend this size in smaller areas.
This product is under my office chair (a high backed task chair)at my computer desk on laminate flooring. It stays put and allows for some control over chair movement (i.e. chair doesn't 'take off' or slide as it does on laminate floor.)