I just recently got a stand up desk and am very happy with this mat.  It allows me to stand all day.  I find even when my duties allow me to sit, i find my self standing, comfortably.  I bought a Veridesk pad first and wasn't happy.  Some of that was that my feet had to get used to standing, but also this Newlife pad seemed to have just a little more support than the other one.  Even tho they seemed the same at first glance, i like the NewLife better.   It doesn't slide around even though i have it on top of my plastic chair mat, it stays put.  I am very happy.  (as a side point, i really recommend going with a stand up desk, my back has been very happy).