220g Plain Olefin Polyester fabric（https://www.dhxoutdoorfabrics.com/product/olefin-outdoor-fabric/220g-plain-olefin-polyester-fabric-dhxolf001.html）
Olefin fabric is polypropylene fabric, but after a special process, its feel better than ordinary polypropylene fabric, olefin is widely used in outdoor furniture fabrics, because of its uv resistance is second only to acrylic, its superior sunlight resistance, commonly used in outdoor