The best solution for preventing RSI caused by your mouse is to buy a mouse pad with gel support.
This Sandberg pad is made of gel that moulds itself under your wrists whilst providing firm support.
Perfect relief for your wrists.
  Features and Benefits 5 years warranty.
Double Quality Control   Specification Length of Guarantte: 60 months.
Dimensions: H 25.
6 W 25.
6 D 2.
3 cm