These are great..they protect the carpet in my office. This is the second set I have purchased as the first set finally cracked after approximately 10 years. Well worth the price.
It functions as excepted. The chair wheels settle into the plastic which will lead to an early death but that is typical of carpet chair mats. The grippers are better than before. They do not dig into your hands while placing or moving the mat.
The only concern we had is that it is a bit softer than the previous mat for my husband's desk chair. He did not roll as freely using this mat. We solved the problem by swapping it for my older rigid mat which holds him well. I am easily accommodated by the new mat but I weigh 105 vs his 195 lbs.
Bought this because it was a little thicker than most. Sadly it is so soft that just sitting there the chair wheels sink into the mat. When I move the chair the indentation slowly returns to normal. (I weigh less than 200 pounds.) Other than that it stays in place and the chair will move around as expected - once you get it out of the "hole" it created while sitting. For those who wonder it arrived unwrapped/"flat" - so soft it easily bends.