This pen is handcrafted with the use of Cocobolo wood. This exotic wood is from the forests of Indonesia that are slowly depleting. Because of this, importation of this wood will come to a halt. For every Cocobolo pen purchased we donate to have a tree planted in Indonesia with the help of the Organization: One Tree Planted. A Manhattan pen is simplistic, yet in a stunningly beautiful way. It is an every day kind of pen. Refill instructions: Twist top clockwise until it comes off. Then you have access to the ink cartage.