Description This 20ml bottle of Sailor Souten fountain pen ink is smooth-flowing and specifically formulated to be safe for all fountain pens. Sailor Souten is a gorgeous bright blue, very similar to Sailor Jentle Sky High.For a thorough review of this ink, check out our thINKthursday blog post.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.