I had two office mats that had turned yellow after nearly 8 years so I found this mat and bought two. They are the same size as my previous mats so they fit perfectly. However they have a smoother surface than my older ones which I really enjoy; less noise when the wheels of my office chair(s) swivel around. Speaking of which these are good for light to medium weight office chairs; in general these mats will start to get indentations on ANY carpeted floor if your chair is a heavyweight (it'll sink into the same spot over time). Plan ahead if you have carpeting and don't get a really heavy chair. Also the lip of these mats is NOT beveled to keep the chair on but sloped to let the chair slide off; this may be good or bad depending on your preferences.
The 50% off coupon led us to make this purchase but it is definitely a better value than the more costly folding model. That one cracked in less than a full year.