Product works as intended but would not recommend on a thicker carpet. it seems to slip backwards over time and needs re adjusting. After 30 minutes of the chair sitting in place or one position there are indents into the mat which then makes moving the chair forwards or backwards due to being stuck in the rut. I feel the product would work great on a low pile carpet with less padding. My issues may be due to the thickness of the padding and carpet which is allowing for the slippage and indents. I would still recommend this product even with my issues.
The only negative I have is: the mat was taped for shipping and the sticky residue attracts soil and looks nasty. I would recommend the mat to a friend but would caution them to work on the tape residue before walking on it.