Just too thin. Hard to roll on wheel sink way in. My old one was a little thicker enough to support the wheels fine but it cracked after years of use. Bought that one at Staples also.
It's a floor pad for chairs on med. depth carpet or less. It's tanslucent blue. It stinks of plastic chemicals. It will poke you with it's little pointy prongs on the bottom that hold it in place on the carpet...when you move it and attempt to roll it out in position. It was on sale for [$]. It works. [...]