Initially I thought the mat looked a little too small, and as a ‘born again’ mouse user (after many years just relying on a track pad) I have waited 2 months to write this review to see how it measured up during day to day usage. I have been very pleasantly surprised! I am definitely a convert to the slightly smaller size (in comparison to the standard old plastic-y coated rectangular mats I had used in the past) this mat measures 17cm wide at the wrist support end increasing to 21.5cm at it’s widest, with a length of 16.5cm ‘mouse space’ plus an extra 7cm for the wrist support and is spot on for my purposes (I work on my computer all day between my accountancy and map analysis work online). I have never ‘run out’ of mat space and had to move the mouse, the tracking is very accurate and smooth due to the fabric-y texture of the mat’s surface and the mat is very comfortable to use for long periods because of the gel wrist support. I would say however that my mouse (and hands!) are on the small size so maybe this wouldn’t be the case if you had a bigger mouse, but I can’t see it would be a problem. The size of the mat means that it doesn’t take up much space (giving you more workspace if, like me, you have to have reference material on your desk too whilst working) and the non-slip backing is excellent (grippy without being a pest to move). Overall, a highly recommended mat at a really reasonable price and refreshingly good customer service from the seller.