Zebra Sarasa 3 Color Gel Ink Multi Pen - 0.5 mm - Black Body

Overall, this is an extremely well-designed pen. The grip is comfortable and the body is thick--about what one would expect from a 4+1 ballpoint multi pen. Gel pens use a lot of ink, and the thick body allows for refills which last for a reasonable amount of time--unlike any other gel multi-pen I've seen. The colors are dark, making written text a pleasure to read.

The one drawback of this pen, which usually keeps me from using it, is that the blue ink is too dark. In low-light conditions, I am unable to discern the difference between blue and black--a huge problem since there are only three colors to work with and I like to color code things. There is a green ink refill available. But, to my knowledge, there is no way to change the color of the blue tab used to extend the pen tip. The perfectionist in me does not like the idea of sliding a blue tab and getting green ink.