I've owned one of these wrist-rests for around a year. It looks great, is easy to keep clean, and, most importantly, rests your wrists whilst you type.
So far so good. However, after a year mine has burst. It started with a small hole which spread and now the rest's firmness has gone. In fact, it is now useless and belongs in the bin.
If you want a well-priced product which looks good and does the job in the short-term, then this is for you. If you want a hard-wearing, long-lasting product then look elsewhere.