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. The soft pad for your arm optimizes your comfort during many hours of work. The mousepad will stay in place during action, thanks to the anti-slip material on the bottom side of the pad.
This seller provides invoices. To receive one, you can contact them once you place an order.