Makes her job easier + Makes her happy = Makes me very happy. Durability is TBD at this point. Those other brands I bought had no external volume control so when I had to raise or lower the volume, I had to reach in my back jersey pocket and fiddle with the volume. For me however it loses a star as wasnt that easy to put together, had a hard time getting the screws to "take" & the bottom part was off no matter what I did, so couldnt stop it from wobbling & had to put something underneath to level it out. I feel like the problem is actually the lights that is causing the battery to drain fast. Nach 1-2 Wochen ware sie dann wirklich bequem und ich wollte sie gar nicht mehr ausziehen. Im hitting a point where Im just going through money on all these devices, and nothing is lasting?Whats going on over there? I really wish I could get a true working Sensei styled mouse (ambidextrous, usable buttons both sides) with a modern laser. All in all they keep her feet warm and they are comfortable and that is what matters! Literally. The review from Ralph Moore says it all.