19815 Borealis Black 4,5 oz Penna in Omaggio

That free pen they toss in is a nice bonus, and the 4.5 oz bottle feels bottomless for the price. The ink itself runs wet and dark, and it's held up fine against a spilled coffee on my desk without smearing.

The 4.5 oz bottle is a serious amount of ink for the price, and the water-resistant quality gives me real peace of mind for everyday notes. The free pen that came with it writes smoothly enough that I've actually made it my daily carry.

The free pen that came with this bottle writes smooth right out of the box, and the 4.5 oz size means I can actually test it in multiple pens without worrying about running out. Water-resistant is a huge plus for me since I tend to smudge everything with my left hand.