PenAgain Ergosof pen will make writing a joy. The wishbone shape design encourages the time-tested " tripod" finger grip. This grasp is not only comfortable but is also more ergonomic. Whether you are right or left handed, the Ergosof pen will prevent sore fingers and tired wrists. The dynamic tripod pen hold has been shown to help children focus on the content of their writing rather than having to worry about their control of the pen or their speed of writing. Now they can express themselves through writing with ease. The pen is retractable so you won´t have to worry about leaks. It has easy to replace refills so that you´re never short of ink. This pen´s electric black case makes it stand out above the rest. Helpful for Arthritis and Ehlers Danlos Syndrome patients. Each pen comes with two bonus refills. Black Ink, medium/dev4.0mm.