This product needed more than 1 image on the Mighty Ape website. The Chairmat has 2 cut away corners (keyhole shape) to allow for desk legs (-). I probably wouldn't have bought it if I'd known that as I would prefer just a good ol' rectangular mat and not a keyhole shaped mat.

Just got this to replace a cheap trademe carpet protector mat with a claimed thickness of “5mm including the gripper bumps”. This Dixon one is easily twice the thickness and really feels like quality. Now my chair glides over the mat without sinking into the carpet underneath. Highly recommend. Only double the price of the trademe crap aswell!