* Waterproof Sails are made from high density polyester that blocks up to 95% of the sun's UV rays and repels up to 99% of rain water. * Straight edge instead of the curve, keep more space shade. Colorful, functional, easy to install or take down and can be used almost anywhere you want to keep the sun off. * Sails come finished with a double-stitched reinforced seam with an anti-rust grommets in the middle and STAINLESS steel "D" rings on each corner. * Needs to be installed at an angle and pulled tight so that water will run off rather than pool in the middle. 1 Year Warranty under normal usage and weather. * Ideal for backyards, patios, decks, gathering areas, pools, gardens or anywhere you need a bit of shade and privacy. * You measure, we make it.We are not able to accept returns on custom size orders, please measure carefully before you order. Need more custom sizes, please contact with us.