A good heavy-duty carpet protector must have enough rigidity to keep the weight off the carpet below. This is a lightweight piece of plastic which will require replacement even with light use.
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!