Why is PET used to package so many items?

PET is a highly valued packaging material because it is clear and safe, strong yet lightweight, economical, and shatterproof.  PET's ability safely to protect food, beverages, personal care, pharmaceutical and medical products is recognized by health authorities around the world. PET is also used widely because it is the most readily recycled of all plastics materials and in most uses has a lesser environmental impact measured over its full life cycle than alternative packaging materials.