Unfortunately my chair does still cause the mat to slip somewhat. The previous mat must have been meant for very thin carpeting so this new mat is an improvement. I had hoped to not have to move it into position at all but I do--about every week. My carpeting would not qualify as thick.
I thought this mat was a bit pricey but I wanted a good quality mat. The computer chair that is on this mat gets used daily. Between my husband and I my teenage children and grandchildren who visit every weekend it seems it is always being used. I had it for about 2 to 3 months and it’s just like new. Keeps my carpet from being ruined. I would recommend it. The only reason I gave it 4 stars instead of 5 is because it tends to slowly slip out from where I have it and I need to push it back in place about once a week.
I have what I would consider a low pile rug and my chair rollers still sink into it making it a little difficult to roll sometimes. I had tried the low pile chairmat and it was horrible this one is better but not great .