UV PROTECTION: Keep your family and friends cool and safe from the sun with a shade sail (blocks up to 95% of harmful UV rays). It is also an economical alternative to expensive garden umbrellas, gazebos or fixed awnings. PREMIUM QUALITY MATERIAL: Our outdoor shade sails are made of high density polyester with a polyurethane coating. The shade sails are waterproof, fade resistant, water resistant and will not mold, mildew or stain. STURDY DUAL EDGE: Prevents edge fraying and warping. Each corner ends with a 316 stainless steel D-ring for easy hanging, plus extra heavy-duty stitching to help keep the D-ring securely fastened to the shade sail. EASY TO INSTALL: D-rings are located on the edges of all four corners, simply hang each corner on a hook to install the shade sail. Use knot reinforcement to attach ropes for better wind protection and increased safety. SUNSHADE QUALITY: Our sails are made of high quality polyester with 98% sunshade and 95% protection from harmful UV rays. Our sun protection sails are woven from durable, waterproof materials to withstand harsh weather. PRACTICAL AND MULTIFUNCTIONAL: Widely used for patios, lawns, gardens, swimming pools, ponds, decks, courtyards, gardens, yards, gardens, parks, garages, pergolas, sandboxes, driveways, or other outdoor spaces. 100% SATISFACTION OR MONEY BACK GUARANTEE: We are very committed to our customers, if you have any quality or other problems, please feel free to contact us. We will try our best to find a satisfactory solution. Really happy to serve you all.