High Quality Material: Thanks to the high-density fabric (PES) in 420D, the waterproof shade sail is more wear-resistant, tear-resistant and corrosion-resistant, but can provide good protection from the sun by effectively blocking 98% of ultraviolet rays Advanced Technology: strives to provide the highest quality shade sails, 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 rows for curves in each corner make installation more stable Sturdy Construction: Arc edge, D-shaped stainless steel 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 Installation: You can easily install the shade sail with fixing ropes. We recommend an installation angle of 20 to 40 degrees to achieve maximum tension of the sun sail