Nano-Pigment Fountain Pen Ink, Souboku

Made with Sailor's proprietary nano-pigment process, this gorgeous blue ink flows perfectly through fountain pens and dries waterproof. "Souboku" is one of two blues offered in nano-pigment formulations. It's a classic blue-black, quite dark when applied with a brush but more of a cool, deep blue-grey when used in a fountain pen.

Sailor nano-pigment inks come in a heavy glass bottle with square edges and an iridescent blue cap. The bottle label is made from washi paper and features visible fiber inclusions—an elegant reminder of this ink's Japanese heritage.

50 mL bottle with cardboard storage box. Made in Japan.