How long does a Copic marker last?
Generally speaking, if you store the Copic markers correctly and refill them properly, you will be able to use them for a very long time. All Copic markers also feature replaceable nibs and can be renewed, so feel free to replace them as needed when you feel the drawing comfort changed. That being said, since Copic markers are made of plastic, they will deteriorate over time. Because of that we ask you not to store them in direct sunlight (or fluorescent light) and high temperature and humidity.