This chair mat protects my rug from the constant back and forth motion of my chair wheels. I'm disappointed that the plastic mat forms dimples bending into the rug around the chair wheels. This causes the wheels to not move freely and at times keeps me stuck in one position. I would have preferred a thicker gauge of plastic.
The mat is good for desk chair when you have carpet on the floor. This is the second mat I have purchased from Staples. I would recommend this mat to anyone who is looking for a mat to easily roll around in a desk chair on carpet