I have a very small office in my house. Carpet made moving the chair difficult. Bought the smaller chair mat which took care of the problem. Price is reasonable too.
Had the mat for 10 days and seems to work fine. Chair wheels do sink in slightly if you sit in one spot too long not a real issue for me. Seems like a good bang for the buck about half the price of the thicker ones. If you don’t have high pile rugs I definitely recommend!