I found this ZIG writer pen I purchased honestly 5 or 6 years ago. It is double-sided, brown color and with permanent ink. I never though I would use it much, but all of a sudden started sketching with it and absolutely loved it! I can't believe that after all this time the ink is till fresh and it feels like drawing with a brand new pen. I have to admit, the quality is AWESOME! I started drawing on top of previously made sketch (another breakfast doodle).