Go green with this stylish and sustainable Craneea Polyester Rpet Drawstring Backpack Polyester Drawstring Backpack, made from Craneea Polyester Rpet Drawstring Backpack polyester. Comes with a lightweight design and durable drawstring closure. Perfect for the gym, school, or a day trip. RPET, short for recycled polyethylene terephthalate, refers to any PET material that comes from a recycled source rather than the original, unprocessed petrochemical feedstock.