These Reusable bamboo pens are made from natural bamboo, a fast-growing and sustainable resource. As the traditional ballpoint pens are made of unrecyclable plastic, which ends up in a landfill or worse the oceans, these Bamboo Pens become an obvious choice! Ethically sourced and Hand Crafted, these pens are an investment in the environment. Once the refill is over, you can simply open it from the bottom and replace the refill.