Description Sailor Shikiori Potsupotsu fountain pen ink is a medium toned purple, and was designed as a companion ink to the 2021 Sailor Sound of Rain Winter Rain lavender colored fountain pen. The packaging is practical and adorable, and the name of the ink color is embossed on each of the 3 cartridges! The Sounds of Rain inks are inspired by the different sounds that rain makes as it falls. Potsupotsu represents the cold ‘pitter-patter’ of a brisk winter rain in the icy lilac color. Sailor fountain pen ink is smooth-flowing and specifically formulated to be safe for all fountain pens. Sailor fountain pen ink cartridges are proprietary, and only fit Sailor fountain pens that accept cartridges. Having trouble deciding between colors? Use our Ink Comparison Tool to quickly and easily view different colors side by side.We offer Free Shipping on all orders over $50 for US customers, and for orders over $250 for our Canadian customers.