High Quality Material: Thanks to the high density fabric (PES) in 420D, Waterproof Sun Shade Sail is more wear-resistant, tear-resistant, corrosion-resistant but it can provide good sun protection by effectively blocking 98% of ultraviolet rays Advanced Technology: is committed to providing high-quality shade sail, attaches great importance to every procedure, each edge of the product contains two layers of webbing to prevent the product from tearing, its stainless steel D-ring and four curving lines in each corner make the installation more solid Stable Construction: Arc edge, stainless steel D-rings, fixing ropes, four-layer twill webbing reinforcement as well as double fabrics between rings and shade sail, which help to increase the stability of the shade sail during use and its service life Easy to Install: You can easily install the shade sail with fixing ropes. We advise that the installation angle of 20 to 40 degrees is good for obtaining maximum tension for the shade sail,