Mmm, they are quite resemblent of the evergreen Microsoft Intellimouse 1.1a mouses.
Looking at the white one this was my first thought.
But that is not a disadvantage, that is a classic and proven shape. With low enough weight,
I would definitely try these, if I would need a new mouse.
The green-dark color scheme is quite nice too.
I was able to use both of the the side buttons of the 1.1a without accidental clicks, while maintaining a nice grip, despite of them being placend on both sides and being quite soft. I still miss such feature on modern mouses. I think the two buttons being placed on one side is a bit of a disadvantage sometimes. I have played Counter-strike at a semi pro level, and would have used the 1.1a for very long if that being available. Technology improved a lot since then, but imo that still would be decent and far from a letdown. Especially for that price :XD