The PC is about 22cm cube. Made from steel and aluminium. One of the coolest features is that the outer cover, which has fans attached, can be slid off with ease (even with the PC on). This is due to the magnetic pogo pin connectors. I love these things...

The cooling is designed to follow convection with the CPU cooler and 200mm chassis fan exhausting up. This draws cool air in from the side, along with the side intake GPU fans and quickly expels the hot air.