The mat needs to be stiffer. The casters of my chair sink into the mat making it difficult to roll a few inches. My weight is about 175 pounds I don’t know how much the chair weighs.
I wish it were larger. I didn't bother measuring another one that I bought previously and simply assumed this new one was the same size. It isn't. The new one is considerably narrower.
Works great for under my chair. It arrived the next day and I didn't have to roll it out or use heat. The little grips on the bottom didn't hurt my hands when placing it down and it's a great size for a small room.
It's very clear. Dimples a little slides a lot if you move around often and has to be re-positioned on a low nap area rug. Will use some double sided carpet tape to secure. It's nice that the AnchorBar cleats don't poke you but don't really keep mat from sliding.