Every single day, over 100 disposable pens are tossed in the trash. One way to help stop waste is to invest in a high-quality refillable pen. But many of those pens can be really expensive and difficult to refill. Instead, look for the seven-year pen. Its design marries the convenience and price of a disposable pen with the eco-attributes of a refillable pen. The big difference between it and a disposable pen? The seven-year pen hides a jumbo ink cartridge inside a highly durable pen casing, and it can write up to 1.7 meters of penmanship a day. That equals a lifespan of seven years.