【99.9% Waterproof】- The shade sails have a splash-proof coating on the fabric surface and a double PU coating inside, the shade sail consists of three pieces of fabric. The fabric seams are treated with hot-pressed glue, prevents water from penetrating through the seams. Water pressure resistance: 400 mm HH -600 mm HH 【High Quality Guaranteed】- The shade sails are made of 160 g/m² polyester fabric. It has the characteristics of high tensile strength, aging resistance, corrosion resistance and radiation resistance. Strong seams and durable 316 stainless steel D-rings at each corner. It blocks 95% of UV rays 【Practical and Aesthetic Design】- The curved design shows artistic beauty, Stretch shade sail better to avoid wrinkling and sagging of shade sail. All edges have double-thickness reinforced seams to prevent fraying and edge warping. Due to the curved sides, the actual shaded area will be slightly reduced. Various colors and sizes are available 【Easy to Install】- The measurement is