I found this to be terribly uncomfortable. The cushion is hard and my wrist hurt. I stopped using it right away and switched back to my old flat mousepad that came as a marketing material. Still feels better than this one.
I was experiencing some wrist pain and numbness in my mouse hand from using a mouse without a wrist cushion. This small inexpensive mouse pad has solved those problems entirely. It also stays put and is discreet and low-profile so I give it two thumbs up (and five stars.)