I used this mat most weekdays for about 6 hours. It has been just over a year and the mat is in pieces - very sharp pieces. I would not recomend this product
bought this as a quick/cheap fix for a 2nd desk in my office. It is adequate for my purposes. Chair rolls ok but wheels make big indents in the mat. They do go away after a while. I have to make sure I keep moving the wheels so they dont sink in too far. not very heavy duty but i knew that when i bought it. It is soft enought that it shouldnt crack.