Spent the extra money because the first one slid all over the floor. This one isn’t any more stable and the teeth to hold it in place on the underside aren’t any deeper than first one.
This mat is not able to keep the chair from forming indents that makes the chair hard to move. I am a small person so weight is not the issue. Would not buy again
Took some time before we found the right mat to sink into the carpet but this one did the trick. And my hubby’s chair just glides over it no problem. If anyone out there needs one this is it!