I was actually very surprised how well this chair mat worked on top of the carpet. I’ve never had a whole lot of luck with plastic mats and carpet but this one really surprised me. I recommend this product
This works good enough and is good enough for the price the only issue I have with it is that it gets dents in the mat that my chair keeps wanting to roll into. I am a small person my chair is a small task chair and my carpet is very low pile... so I'm not sure why this plastic gets deep wheel dents. 🤔