I initially purchased the smaller version of this protector, which didn't adequately cover the area of my fuel tank that was getting damaged. I returned the small one, and bought this one which is much better.
This tank protector can be a bit difficult to apply, but generally pretty straight forward. I still wish that it was a bit larger as the narrow part in the middle is right where chips were showing up on my bike. But it covers the majority.
I have a ninja 250 and this protector follows the contour of my fuel tank quite nicely and covers approximately 1/2 of the area between the seat and the fuel door. My bike is red and black, and the color complements that nicely as well.
Overall good product, definitely worth the $18 I paid for it.