This rug was offered to me at my expense when they heard the news that the repeated movement of the fingers on the mouse can cause muscle stress in the long term arm (after a test on mice). I immediately adopted: its shape is generous, is enough space to allow for bold moves, and of course allows the cushion to wedge his wrist. Note that I have not tried this accessory with a watch. After months or years of use, sewing cushion dropped, revealing a sticky material, smelly, a bit like the toys offered in Scrooge Magazine. Therefore I will redeem in probably one someday. Meanwhile I'm writing this review using my right hand resting right now the object of desire.