This wrist rest seems well made and feels comfortable. The design is pretty good - a long bit for opposite the main keys of your keyboard, with a smallish oval for opposite your numeric keypad.
Unfortunately, it is far too high for my Apple keyboard. It also takes up too much space on my shelf, so that I can't see the top row of keys on my (very small) keyboard. This is something of an oversight on my part, but I suspect it will be too high for many keyboards. It might suit a backwards tilting one.
I'm quite glad I won't be using it, since my other complaint is that it's really quite smelly! Perhaps I just got a dud. It smells like damp clothes left in the washing machine.