Nature line ball pen with barrel made from recycled milk cartons and white fittings. Push-button mechanism and blue ink, with the distinctive of recycled milk carton on the barrel. Milk cartons are mostly made of cardboard and aluminum. During the recycling process, the different packaging materials are separated for reuse and re-purposing, thus contributing to the infinite path of the circular economy. This material is well known for its high recyclability, as well as for its lightweight and resistance.