Good quality, although a little "high" for my taste.
I have had these wrist rests for 2 and a half years now (1 at work and 1 at home) and I find them pleasant to the touch, rather sturdy (a few cracks in the hard plastic on the support but invisible because they are on the work surface).
The only downside is that they are a bit too high, which means I use them more as an "elbow" rest than a "wrist" rest.