Surface

The top coating is extremely similar to the one used on the Cougar Minos X5. It's like a transition between a glossy and matte finish—it's not that grippy, but wasn't slippery at all for me. On the plus side, it doesn't collect fingerprints readily or get grimy easily. The paint looks like it has some tiny light reflecting grains inside it, which looks proper in my opinion.


The CPI-changer and side buttons both have a glossy finish, but I did not notice a negative side to this other than that they collect fingerprints quite easily. Both side grips are hexagonally textured, but not rubberized; they are just out of plain ABS plastic. In my opinion, they should have used the same coating as on the top part, but without the hexagonal holes since those tend to be more slippery than the non-textured parts. The materials used are therefore good, although not great.

Build Quality

The build quality is quite solid even though there are some minor creaks if I press on the shell very firmly. Also, there is some rattling from the main buttons (they are a bit too loose) if I shake the mouse in midair, which wasn't the case when simply swiping it across the mouse pad.

I was a bit more concerned by the mouse feet, which were a bit misaligned, though that thankfully didn't cause any noticeable extra friction or scratching on the mouse pad.

Weight

The Iris Optical RGB weighs roughly 96 grams with a few centimeters of cable. This is quite good for the size of the shell and feels balanced too. There is no built-in or adjustable weight either. At 96 grams, this mouse is what I would call of medium weight. I would still prefer it to be a bit lighter because lighter mice generally put less strain on your wrists, which can be handy over the long run, and I also found that I can aim way better with a light mouse—this too is intuitive of course, but many users report the same.