Frixon Pens are the best erasable pens that I’ve ever used. It’s great for sketching out an idea where you need a lot of colors and room to experiment without the worry of any stroke being permanent. It doesn’t leave a residue behind when you erase like most pens. The only downside of this pen is that the ink dries fairly quickly and if you erase too hard you can diminish the quality of the paper.
