Made of 100% 185GSM New HDPE (high density polyethylene) material--No recycled materials used, more healthy and safe. The breathable fabric allows cool breezes and light to pass through for better airy and comfortable space, so the canvas isn’t waterproof90% Shading rate and protect against up to 95% harmful UV rays. Perfect for gardens, patios, swimming pools, bbq areas or other outdoor areaCurved sides to enhance pull strength and prevent drooping, so the actual shading area would shrink slightly, tolerance 4~6 inches for each side. You could install different shade sails of different colors and sizes to get a larger shading areaPlease measure the size of the installation area accurately before purchasing. Leave 1.5-2 foot space for the hardware kit between D ring and fixing points, all edges are finished slightly curved so it can be stretched tightly.It can be used for 5 years under normal usage and normal weather conditions.Stainless steel D ring on each edge and 3*4.9FT long durable ropes are strongly guarantee fastness of installation. It is recommended to install the shade sail with hardware kit that's sold separately in our shop.