Packaging, Weight, Cable and Feet
The box contains the mouse in a plastic tray, along with a quick start guide. It's nice to see that ROCCAT has adopted Logitech's way of wrapping the cable to avoid kinking.
My scale shows around 86 g (+/- 1 g) with a bit of cable. ROCCAT, on the other hand, indicates 89 g without the cable. I'm inclined to believe my readings to be correct, so the Kain 100 actually ends up being lighter than expected. 86 g isn't featherweight territory, but considering the amount of engineering that went into it the weight is actually highly competitive.
The Kain 100 comes with a standard rubber cable. Flexibility is mediocre. I'd recommend either using a bungee or at least some kind of fixture to create a bit of cable slack. Its length is 1.85 m (measured).
The feet on the Kain 100 are standard black-dyed PTFE (Teflon) feet with rounded edges. They may look regular, but the glide is excellent. There are two big feet as well as a ring around the sensor, although this one is merely for decorative purposes as it doesn't touch the surface.