1. HDPE MATERIAL: The sunshade sail is made of density polyethylene (HDPE), lightweight yet for extended use. It not only provides the right amount of airflow and flexibility but also blocks most sunlight, cooling temperatures, offering shade in summer, and retaining warmth while providing moisture in cold weather. 2. SUN PROTECTION: The sunshade sail offers approximately 90% shading, meaning it can block UV rays and most sunlight while allowing air to pass through its surface. The black sunshade fabric blocks 90% of sunlight, creating 90% shade coverage wherever you need it. Only a small amount of sunlight can penetrate the mesh fabric. Suitable for outdoor structures and shading. 3. EASY TO INSTALL: Each side features aluminum grommets spaced about every 100 cm, evenly distributed along the reinforced edges. You can easily and secure or hang the sunshade using bungee cords, zip ties, or ropes (NOTE: none of these are included; they must be purchased separately) without worrying about tearing. 4. REINFORCED STITCHED BINDING: The shade cloth uses a lock stitch knitting technique to prevent fraying and pilling. Designed with a newly bonded edge featuring 6 orderly stitched seams and reinforced corners, ensuring durability and tensile strength while extending the lifespan of the black sunshade.