Mat is not as firm as I would like it to be. Chair rollers make indents in it as it Chair is moved across the mat. Indents do not appear to be permanent.
My hubby bought this mat since his old one had developed holes. We purchased that one at Staples also. It held up for quite a while so that's why we bought this one there.
We got this particular chair mat because of its thickness. It was delivered when you stated ready to use. At this point one week later we are very pleased with it and trust that it will last longer than our previous chair mat.
The packing tape used to ship the Chairmat stuck to the product and could not be removed with acetone cleanser goof off vinegar or other removers rendering the chair mat un-usable.