Polyester is a multi-purpose elastic material, it combines the benefits of both polypropylene and nylon. A strong, lightweight, little stretch, resists abrasions that are widely used in belts, cargo straps, tow straps, military straps, and other products.
The properties that make it a great choice are its strength. Polyester Seat belt doesn’t stretch, it is fairly UV stable, and it doesn’t absorb water. It also comes in a wide range of widths and strengths. It is about 90% as strong as nylon and it is one of the most UV stable webbings commonly used. These properties make it a very good choice for hammock suspension and backpack straps.