Just a small version of the flowpen - it's filled with this alcohol based ink that smells real funky. Still, the size is clutch as f*ck, it literally fits in the palm of my hand. I copped the green, and it's a dark green more a forest green if you want to get specific. I just filled it with pilot ink for the refill and it works like a charm. If you're thinking about it - do it man it's worth it or a buy a burner.