My previous chair mat had cracked so badly that pieces were about to break out of it. I received this one and rolled it out into place. I had to place some weighty objects on the edges to help flatten it out but it works fine. I does slip a little and I have to readjust it slightly from time to time but my chair rolls well on it. I have no complaints.
The description for this mat says that it "Protects carpets up to-3/4-inch thick including padding" however I used this on carpet that was barely 1/2" thick and the wheels of my computer chair would keep sinking into dents in the carpet caused by how thin the material is. The mat provides basically no support for chairs on carpet.On top of all that when I received the mat it was absolutely filthy and the adhesive on the tape that was used to hold it together during shipping stuck to the mat.
If you want a floor chair mat this is better than nothing. This mat wasn't for sale in the store so a salesperson ordered it on-line. I made a huge mistake by not checking for spikes on the bottom of the mat; there aren't any! The mat slides on the carpet daily and jams itself someplace usually against the desk.
THIS IS NOT AS HARD OF A MT AS WE WANTED IT STILL DENTS IN WHEN YOUR OFFICE CHAIR IS ON IT . NOT TOUGH ENOUGH HARD TO ROLL ON. NOT REALLY HAPPY WITH ITEM. WOULD NOT RECOMMEND IT AT ALL.
I thought it would be a solid piece of plastic. Instead it was a roll of vinyl. The website description did not say that. Basically it's OK. It's not worth the money that they charged. It was about $33.00.