High Quality Material: Thanks to the high density fabric (PES) in 420D, Waterproof Shade Sail (160g/㎡） is more wear-resistant, tear-resistant, corrosion-resistant but it can provide good sun protection by effectively blocking 98% of ultraviolet rays Advanced Technology: HAIKUS is committed to providing premium quality shade sail, it attaches great importance to every procedure, each edge of the product contains two layers of webbing (2, 5cm, 18g/m) to prevent the product from tearing, its stainless steel D-ring and four curved lines in each corner make the installation more solid Stable Construction: Arc edge, stainless steel D-shaped 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 serves well to obtain maximum tension for the shade sail, contributing to its waterproofing. Ideal for patio, balcony, garden, swimming pool, campsite, lawn, parking lot or other outdoor areas High density fabric (PES) in 420D can provide the right protection against the sun by effectively blocking 98% of ultraviolet rays. Waterproof shade sail (160g/㎡) is excellently water resistant. Each edge of the product contains two layers of webbing (2.5cm, 18g/m) to prevent the product from tearing. The stainless steel D-ring as well as double fabrics between rings and shade sail in each corner make the installation more solid. Twill webbing reinforcement with layers and wires helps to increase the stability of the shade sail during use and its lifespan.