Eternal Color Pencil Set Made from Recycled Milk Cartons. This set includes 6 eternal color pencils, an eraser, and a notebook with 50 blank sheets. With convenient elastic closure and Recycled Milk Carton logo.Milk cartons are mostly made of cardboard and Aluminium. 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.