Curved Edge & Strong Stitching: The waterproof rectangle sunshades are sewn with strong stitching and durable stainless steel D-rings in each corner. Ideal Shade Solution: This rectangular sun sail blocks up to 98% of harmful UV rays and direct sunlight. Shield you from the sun without trapping hot air underneath. Provides cool shade while still being breathable, keeping you and your family cool and comfortable. It can be widely used over patio, garden, deck, pool, BBQ areas, backyard, terrace, carport, pergola, sandbox or any outdoor area. Size Description: The awning sail sizes are from D-ring to the other D-ring, and all dimensions are approximate and with tolerance ca +/- 10cm. Due to the concave shape, please choose appropriate size to your scene size. Easy to install: Measure the area where the canopy sail is to be installed, connect the D-ring at each corner by the free supplied ropes with the anchor points, tension the shade evenly and align properly. (The recommended