【Quality & Effective UV Blocker】Kupton sun shade sail is made of premium, 100% virgin HDPE (high-density polyethylene) material which blocks 95% of sun’s harmful UV rays. The curve edge design, strong stitched seams, and durable stainless steel D-rings at each corner improves the pull strength of the shade sail and effectively prevents it from ripping, sagging, or fading.【Cool & Relaxing Shade】Unlike the plastic sun sails that block out wind and trap in heat, this shade sail is made of 95% UV blocking permeable material. It reduces the temperature and UV rays in shaded area during summer, maximizes airflow (so that you can always feel cool breeze) and allows light and water to pass through (so no pooling water on rainy days), creating a cool and comfortable space for your summer outdoor activities!【Easily Installation】Measure and clean the area where the shade sail is to be installed, leave an allowance of 1.5-2ft between the fixing point and the shade sail to fit hardware/ hooks or ropes. Choose two corners higher than others, sloping helps lead rain to the edges of the sun sail shades rather than gathering water in the middle of the sun shade.【Built for Strength】This sun shade sail provides above 3 years of relaxation under normal weather and usage. Our high-density fabric will survive for many years without ripping, sagging, or fading. Maintenance: clean with mild detergent or water, please do not scrub it with a stiff brush and do not put it in your washing machine or clothes drier.【Must Have for Summer】This large sun sail creates a cool, relaxing area no matter how intense the heat is. It can be widely used for a patio, lawn, garden, swimming pool, BBQ areas, pond, deck, kailyard, courtyard, backyard, dooryard, park, carport, pergola, sandbox, driveway or other outdoor venues.