+ Writes under "extreme conditions" as damp paper or overhead (and also under "normal conditions")
+ Fits comfortably in your hand and has a secure grip (no slipping in wet fingers)
+ Refills available (-> no disposable pens)
+ Color selection of the outer shell (orange, olive, blue, stone gray, black, burgundy)
- Price (compared to "normal pens" but quite expensive)
- Black ink (I personally like blue better)
Overall, therefore, an ideal pen for outdoor activities with weaknesses in the price-performance ratio
