Package Included: 1 - 12' x 16' Brown Sun Shade Sail with D rings.   Specifications ★Size: 12' x 16' Rectangle ★Color: Brown ★Material: HDPE High-density polyethylene, 0% recycled material. ★Finish: Double Layers Stitched Seams Edeges, D rings in each corner ★UV Blockage Rate: 95% UV protection ★Warranty: 5 years warranty.   About Shade Sail ★History of Shade Sail: Ancient Egyptians and later the Greeks and Romans used large pieces of fabric to provide shade. The Colosseum in Rome was shaded with large canvas "sails" pulled into place by Roman sailors. Modern shade sails came into wider use with the invention of a far more durable and relatively inexpensive fabric called shade cloth. Useful versions of shade cloth appeared in the early 1990s especially in Australia and South Africa. For most of the 1990s there was some confusion about what these new devices should be called however they are now most commonly called shade sails throughout Australia, South Africa and the U.S.A. Shade sails have yet to have a significant impact in Europe and South America. ★Current technology: Originally shade fabric, like all fabrics in the outdoors, suffered from UV degradation. UV inhibitors are now added during the manufacture of shade cloth and good shade cloth now generally comes with a multi-year UV degradation warranties. Shade cloth is a knitted fabric and this is an important factor in using it to design and manufacture shade sails.Successful shade sail design uses the inherent "stretch" of the knitted fabric to create three-dimensional shapes. Fabrics other than shade cloth are used to make shade sails such as PVC, a more expensive alternative, or canvas variations. The low cost of shade cloth and its ability to breathe makes it a prime choice for "cool shade"