Purchased this mat to protect the wood floor at my house. Works PERFECTLY. This is smooth on both sides so is gentle on the floor . . . the size is right for moving back and forth and side to side while never leaving the mat. Would definitely buy again.
It is expensive. The cleats aren't nearly big enough for the thickness of carpet this is supposed to work for (3/8") so it slides around. It works otherwise with no cracking yet. It flexes a lot too so you need to rotate the wheels periodically so you don't create divots in the mat. Not sure it's worth the premium given it won't stay put and still flexes a lot.
The mat is nice but not very thick. If this is for a home office you might check it out in the store first or get a thicker mat. It seems like it will last but my chair sinks into it when I sit so I have to push myself out of little holes when I want to move.