I have purchased this same product in the past so I was familiar with it. However I was extremely outraged that Staples almost TRIPLED the price in the past 6-8 months. The product is not high quality breaks apart in pieces easily after a few months of use and not worth the MUCH HIGHER price! It will be cheaper for me to rip up the carpet instead of paying this price ever again!!
This is the only clear plastic carpet mat I have seen. It has ;projections on the carpet side to hold it in place as chair moved over it from desk to computer.
I like this chair mat a lot - I wish I'd bought one sooner for my home computer desk. It saves wear and tear on thick(er) carpet and I think my chair will last longer too (less strain on casters etc. because it rolls more freely). It's a bit soft (so it won't crack on deeper carpet) so chair casters do leave a bit of a "dimple" if you sit in one place for very long but if you're shifting around no problem and any deeper dimples gradually spring back. The only "negative" (which is not terrible) is the very soft plastic gives off a distinct "plastic" smell for the first couple of weeks (off-gassing). But overall I'm very happy with it. I'd buy another if this one wears out.