Love this and use it daily, along with the Varidesk stool and another brand’s active mat. It’s easy to use and really helps with my posture.
The only complaint (and the reason for the 4 stars) is that the locking mechanism doesn’t seem to catch on the right side evenly when pushed down to sitting position so even though it does lock in place, it still wobbles a bit. The only reason this is noticeable is that my cat frequently jumps onto the desk so it wobbles and, in turn, my large monitor does too (which makes me a bit nervous). Otherwise, I highly recommend this rodict, as well as the stool.