WoW! This sustainable, blue ink ballpoint pen is made from recycled, carton Tetra Pak milk packs. A perfect alternative for the classic plastic pens. Recycling drinks cartons leads to savings of 75% on fossil fuels, 90% on water, and up to 70% on ...CO2 emissions (compared to using new raw materials). When a Tetra Pack is recylced, the paper and cellulose are recovered and reused. The remaining polyethylene and aluminium are normally thrown away but for this pen they have been processed into fine granules and used to create the pen. The pen carries the text: I used to be a milk-carton.