I have had issues with cheaper mats and my chair wheels digging pits into them specifically bought this to avoid that and I'm ready to throw it in the trash after using from New Years to mid-April. It gets a lot of use but I weigh 185lbs would think that it could handle an average-ish weight but nope.
Good chair mat for my medium pile carpet. I move a lot between 2 computer systems and this mat makes for smooth chair rolling. Not sure about long term durability but so far so good.
I have only been using it for 4 days and I already have ruts where my chair rollers sit. It is a real nuisance to roll around and I don't even have a very thick carpet! This is rated for medium pile carpet and it was supposed to have a lip which it does not which is fine with me. I wonder however if I received the correct mat. Regardless I plan on returning it as soon as I can. Also it was received with curled edges - I had to use a hair dryer to get them to flatten out. I'm not a happy camper as I don't have time for this!