The World Tree fountain pen is the first model from our Sekai collection which embraces the idea of connecting the world by arts. The World Tree fountain pen is born from the aspiration to be connected and peaceful like the World Tree in many mythologies. The main materials of the World Tree fountain pen have been carefully selected from natural precious woods from all over the world such as Ebony, Verawood, and Sandalwood. The Story of Teak Wood For centures, teak wood - which is native to the forests and jungles of Southeast and South Asia - have been desired all around the world for its alluring color, sturdiness, and perhaps most importantly, exotic qualities. Unlike the majority of tree species in North America and Europe, teak wood is infused with natural oils that make it far more resistant to pests, polluted liquid, and wear-and-tear. Like its wooden counterparts in the World Tree collection, the World Tree - Teak Wood fountain pens are each handcrafted and polished, which means that no single pen is exactly the same. However, as they are all made from teak wood, they have dark striations spread vertically across each pen, which is one of the most identifiable aspects of genuine teak wood. The main reason Teak Wood is such a desirable material for wood craftsmen around the world is that its natural properties make it so that the wood will gradually darken over time and with continued usage. Even if your Teak Wood Fountain Pen may have a very similar counterpart, you will find that it will become entirely your own as you continue to use it for the many years to come. Let the World Tree - Teak Wood accompany you on your fountain pen journey.