After about 12 years I had to replace the office chair mat to protect the rug. This replacement was priced right but it's a lighter softer product which suffers "dents" from the chair wheels and the weight of the chair alone. I don't expect it will last long before the material weakens and cracks and I break the mat while sitting in the chair. I'm 180 lbs. This Staples brand (Quill) product meets the price point but not the quality I expected. I feel let down.
We purchased two chair mats one for a hard surface and one for carpet. Both mats work great on the surfaces they were put on. It is now much easier to roll around while sitting at the desk. It was definitely worth the money to buy these mats as they will probably last a long time and protect our flooring too. We would recommend these mats to anyone that is considering purchasing a chair mat. Staples has a really good selection of chair mats and a wide range of prices available for them.