WE USE THE MAT AT LEAST MINIMUM OF 8 HOURS DAILY. WORE THE FIRST ONE OUT AFTER APPOXIMATELY 6 YEARS. MAT REALLY SAVES THE CARPET AND ALLOWS FOR EASY GLIDING OF THE CHAIR.
It is good on plush carpet. I had a thinner mat previously and it cracked badly. So far this mat gives no indication that it ever will. I'm pleased with it.