Slid on carpeted floor during first few days but has stayed in place since. Makes more sense to buy this and replace a little sooner than the expensive mats. Kept my last mat for 10 years; plan to do the same with this one!
Advertized for high pile carpet but totally unsuitable for my home office that has 1/2" pile carpet plus underpad. The chair wheels create craters in the mat that the chair persists in rolling back into when you try to move the chair a small distance. I purchased another pad from another store that is much heavier but still craters under the wheels but to a lesser degree. I use a standard 5 wheel office chair and I weigh in at 170 lbs.