The Pentel Arts Portable Pocket Brush Pen has an interesting ink flow. From our research and how the manufacturer describes it, the ink is water-resistant and fade-resistant.
Now, water-resistant doesn’t mean it's entirely waterproof, so keep that in mind. Some reports suggest the ink can smudge if it gets wet, so you might want to be cautious if your drawings could get splashed or rained on.
There seems to be a bit of a debate on this, though. Some feedback indicates the ink works fine with water-based mediums—possibly due to different application methods or production batches. To be safe, it might be a good idea to test the pen on some scrap paper to see how it reacts under your conditions.
One thing that's pretty neat is the medium-point synthetic bristle brush. It's designed to handle a wide range of line widths, letting you go from fine details to bold strokes with ease.
The pressure sensitivity means you can switch up your style easily, making it great whether you're into detailed drawings or bold calligraphy.
Another handy feature is that it's refillable, coming with two ink cartridges. Just a heads-up, it might take a minute for the ink to start flowing smoothly when you first get it going, but once it does, it tends to be pretty reliable.
Overall, the Pentel Arts Portable Pocket Brush Pen seems like a solid choice for artists looking for flexibility and vibrant ink flow. Just keep in mind the whole waterproof debate and maybe do some testing to see how it fits with your creative process.
