You are absolutely comfortable to hold (also thanks to rubberised shell), you will not slip off when writing
You glide almost by itself on the paper ("butter soft" you have when writing exercise any pressure)
* The typeface does not look like a conventional pen, but rather written as with filler
* No smudging, smearing or blotting during writing (they are immediately smudge-proof)
* Does not dry out, if you times the cap does not close properly
* They are suitable for both right- and left-handed
* The colors are pretty strong
With these pins, it writes itself so awesome that they were immediately taken from my family in fitting. My kids want now even those pencils for school, I will probably have to stock up yet with a few sets.
Tip: they are even cheaper by Sparabo ...
I can do so far no indication of the durability of the pins, but the mines are not interchangeable.
CONCLUSION: A great writing pen set, with it's really fun. Also, the value for money I find consistent, therefore from me a clear buy recommendation.