Firstly, this mat is very large! I had to turn it vertically in order to fit on my desk.
The material used on top seems well made and the graphic is quite interesting - certainly more than my old plain mouse mat. I use this mat with the Razer Naga and was impressed by the amount of control I could accomplish compared to my older mat.
The material is mounted on what seems like neoprene and will stay glued to your desk. The edges are a bit rough but this would not cause an issue unless your arms are made out of sandpaper. That said, for £16 I was expecting something slightly more crafted!
It is a very good mat, no question, but I felt a little disappointed by the aesthetics. It is quite expensive compared to most other mats yet it feels like Razer have cut a square out of a wetsuit and printed their graphic on it.
If you have the money, go for it, but this certainly isn't a budget mat.