We purchased a crystal clear chair mat at Staples Palm Desert a week ago and found it was the perfect fit so we went to get a second one at the Staples Palm Springs. They did not have the same size mat on display but an employee was kind enough to go check in the back and found one!! We are very pleased with both the mats and the customer service!
I'm 180 lbs sit on a standard 5-leg office chair. Mat sits on a 1/4" deep wall to wall rug.Sitting still 15 minutes at desk leaves a dimple under front wheels that's difficule to roll out of. Totally unsatisfactory. I have already ordered a replacement(tempered glass). It's like the plastic wasn't cured. My previous mat was thinner and totally satisfactory but too small(3x4)- kept rolling of the edges. This one is almost 50% thicker(0.1 vs 0.145) but much less supportive. I was suprised - and dissappointed.
It stays in securely in place. I like the mat but the chair wheels leaves little indentations in the mat. It does seem to smooth back out after awhile.
We have the mat under a desk and part of it had to be slid under our bookshelf. It sometimes "bubbles up" on the corner. Quality is good for the price. The plastic seems very pliable. Our older one seemed a little more stiff but I don't know if that is better or not. It cracked after about six years of use (which is very good in my opinion.) Perhaps the pliability of this one will make it a better mat. I really can't say but I'll be happy if it also lasts five or six years.
I chose this mat after reading the reviews (positive and negative) and comparing to other mats. We use it in our home office on carpet while sitting in a leather office chair. The chair rolls smoothly and easily on the mat. My husband is 185lbs and there are no dents creases or cracks in the mat after using it for 2 weeks. Great product!