Recycled Polyester is made of Polyethylene terephthalate (PET), which comes from plastic bottles. PET is a type of polyester that is extensively used in the textile and packaging industries. PET in plastic bottles represents a pure, high-quality form since it is transparent and most PET doesn’t contain any dyes. More importantly, PET's material quality is high enough that it can tolerate degradation during the mechanical recycling process. As a result, premium quality yarn can be assured.