We have residential grade berber carpet with an upgrade waffle pad beneath. No problem for the plastic grippers to maintain their hold. We placed the 36" x 48" lipped Staples carpet chairmat under a large swivel 5-wheeled computer desk chair in our den and it works extremely well. We also placed the 45" x 53" lipped Staples carpet chairmat kitty-corner under our L-shaped computer desk and the smaller 5-wheeled desk chair that we use with it. Each chairmat provides all the space each of us needs to roll our respective chairs back and forth or swivel from computer desk to regular desk quickly and quietly.
It is just annoying that I have to keep rolling my chair off of it so I can straighten it out. It slides to the right everyday and then buckles out as it hits my desk leg!
This chair mat was strong yet pliable. The mat grips the rug very securely and allows my office chair to move over it very easily without sinking into the plastic mat. Great purchase.
We were looking for a chair mat for our home office. We have a thick carpet and previous mats ended up with "dents" from the pressure of the chair wheels and eventually the chair would get "stuck" in them. No more dents. This mat was exactly the right size and so clear that you could hardly tell it was there. The best part was that the price was no where near some of the high prices we've seen and the quality it good.