Bought this because it has a "limited lifetime warranty." Thought at the time of course that "lifetime" means my lifetime. When I called Staples because the mat was cracking the customer service person politely informed me that "lifetime" refers to the lifetime of the mat not my lifetime. And the mfg says the lifetime of the mat is 3 years. How convoluted is that definition? So when buying understand that "lifetime" means "3 years." I asked them to stop advertising it as a "lifetime" warranty and instead say "3 year warranty."
I use this mat in computer room which has a hard wood floor. This mat is perfect for the space that I have and works excellent on hard wood floors. It doesn't slide and has a nice smooth rolling surface. I would recommend this if you need to cover a small area and do not need to move your chair around a lot. If you have a bigger area I would recommend a bigger size.