Description Sailor Shikiori Potsupotsu fountain pen ink is a darker shade of purple and comes packaged in a compact 20ml glass bottle. This color was designed as a companion ink to the 2021 Sailor Sound of Rain Winter Rain lavender colored fountain pen. 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 made in Japan, and is very well behaved, has good flow, and is easy to rinse out of your fountain pen. 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 $59 for US customers, and for orders over $250 for our Canadian customers.