Surface and Materials
As for surface and materials, the shell is of course made out of standard ABS plastic and has a few different coatings on it. The top features some sort of soft rubberization for a nice, pleasant touch and generally enough grip for just about anyone. I personally love it as it just feels great in the hands.
Moving down a little bit, the sides are textured plastic and feel very grippy. I'd honestly prefer these materials and textures on all my mice, but it is quite subjective as well. The upper parts of these side panels feature some glossy inlays for aesthetic purposes only.
Both the side and CPI buttons have a matte finish, and the scroll wheel's outer layer is made out of a textured rubber.
Build Quality
Build quality isn't quite perfect since very quiet rattling can be heard when the mouse is shook, which is probably due to an internal ribbon cable—thankfully, there is absolutely no sensor rattle. Everything else is fine, so the mouse is very well put together.
Weight
The mouse weighs about 95 grams with a few centimeters of cable, which means it is of average weight for its size, and feels pretty well-balanced, too. it's neither front or back heavy. I cannot objectively call it too heavy, though your wrists will thank you for using a lighter mouse in the long run (of course, a lot depends on the shape as well).