I bought this item to replace a new one without the "spikes" to hold it in place. When put under the legs of the desk the previous one would warp all over its surface. So I bought the Staples chair mat that I could see at the store. It felt sturdy enough & I thought the spikes would keep it from shifting positions. It didn't. So my father put a desk leg on it to keep it in place. That caused it to warp and it still wouldn't stay in place. It folded up and scraped my Dad's leg. He is on blood thinners so that mad a mess. I have gotten a bound rug remnant to serve as a chair mat so hopefully that will do the job.
It arrived dirty and had to be cleaned. After peeling off the label it left a sticky residue that needed to be cleaned with Goo Begone and there was a deep scrape that will cause the mat to crack after much usage.
THE MAT WORKS FOR THE SPACE WE NEEDED IT IN. IS A LOT THINNER THAN THE LAST ONE WE HAD. COULD BE THICKER AND MORE DURABLE. IT DOES STAY IN PLACE ON THE CARPET WELL.