Very nice mat just wasn't delivered by Staples in a roll. I had to put it outside for a day in the sun to get the mat to lay down straight. Good thing I live in the desert and it was over 100 degrees that day.
Good price but developing divots just from the weight of the chair and user. Not a huge issue but it does mean that it tends to roll into the divots rather than sit where I want it to.
I purchased this as a replacement. The size is exactly what I needed. Agree with some of the other comments about it very malleable which was a surprise. Very heavy and hard to put in place but great once situated. I think it is a bit pricey for a chair pad but so far so good so I can't complain. I've only had it for about a week now so don't know how durable it will be.