Polyester strapping coils secure lumber, heavy pallets, and other medium-to-large loads for storage and shipment. Polyester construction is noncorrosive so it will not damage surfaces. It is a safer alternative to steel and is more rigid and stretches less than polypropylene strapping, allowing it to retain tension over time. Polyester strapping is stronger than polypropylene strapping, but has less overall strength than stainless steel strapping. Apply strapping using manually-operated strapping tools or a strapping machine.