Ergonomically, the RZR XP900 cabin is as comfortable as any of the other RZR models, since they are all essentially identical. The cabin is narrow, so big honkin' gangly fellas like myself might bump shoulders with similarly sized passengers. The interior is pretty basic. Other than an AWD switch, tilt steering, an analog/digital gauge cluster, and a grab handle, there's not much else to discuss. However, I would like to mention the super bright LED lights that make night riding safe and fun.