Non woven bags are made from non-woven polypropylene, or NWPP for short. By taking polypropylene polymers and spinning them into long fluffy threads and then pressing the threads together, you will get a flexible fabric with a weave-like texture. These fabrics are washable and durable, plus will be able to last for many years. Best part is, you can print any design or color on them and they will come out clear and vibrant.