Structure designed for durability: all edges are constructed with durable, double-layer, reinforced seams that prevent frayed edges and shape changes. Each corner ends with a stainless steel D-ring for easy hanging, extra strong seams so that the D-rings are firmly attached to the sun sail 95% UV blocking: blocks 95% of harmful UV radiation, significantly reduces the temperature in summer and UV sunlight in shady areas, ideal for patio, swimming pool, balcony, carport, etc Waterproof performance: the dense polyester fabric and the waterproof coating make the awning a good waterproof effect Installation: To avoid water accumulating in the middle of the sail on rainy days, these rectangular waterproof awnings must be installed at an angle of 20-40 degrees with maximum tension so that a gradient directs rain to the edges of the sail