Very good for anyone who wants to replace their old one that is worn out, but I would like there to be some way for it not to move from its place. The problem is not terrible, but there are moments when it will come off its position.

shorter in length than most mechanical keyboards from razer. From blackwidow 2 elite pro to blackwidow 4 pro I have one thing to say,
SHAME SHAME SHAME.
The build quality is by far much worse both in the keyboard and in the Wrist Rest.
The old ones were better and cheaper......

Good quality, it requires a little attention to the height to fit the available keyboard, on one of mine it didn't fit and made the hand position uncomfortable, on the other it fit

As quality is good as it says, I wanted it for the razer ornata v2 and the truth is it doesn't suit me, the non-slip is not enough to stay in place and since it doesn't have the magnet like the mama doesn't... In my own keyboard it didn't work as I wanted

I had an issue with my left wrist (a lot of cracking due to injury) which was not improving because of extensive keyboard use (work + home). With this wrist rest, it is perfect now.
It is hard underneath with a tilted piece, so it "saddles" the beginning of the keyboard and "fits", with a relatively soft top part, like a firm cushion.
I highly recommend it, but first check the dimensions to make sure it is compatible with your keyboard (I have a large gaming keyboard) in terms of both thickness and height.