Strengthen Waterproof: Patio sail has additional waterproof strips added at the joint of the fabric to enhance sealing. To maximize its water resistance the seams on the edges of the sail should be facing the ground Enhanced Stitching: Finished with double reinforced stitched seams, significantly prevent tear and wear, improve the pulling strength of D-ring. High density fabrics will not leave white creases after folding, maintaining their beauty 95% Sun Block : Made of 100% brand new high-density polyester, blocking up to 95% of the UV rays. Lower the temperature under the shade canopy. Tear-resistant, not easily deformed and faded Multiple Applications: Edge curve design can improve tensile strength while effectively preventing sunshade sails from sagging. The ideal shading solution is widely used over a patio, lawn, garden, pool, garage, pergola, or deck Notes: Backyard sail is not a completely standard 90-degree right triangle.Leave a 1.5-2 foot gap between the D-ring and the fixing point for hardware installation. Maintaining a certain tilt angle can reduce water accumulation.The fabric is stretchy; the titles shown are for when stretched taut.Make sure the sunshade sail is fully taut during installation, otherwise the size will be too small. Alternatively, choose a larger size Patio Paradise Sun Shade Sail Right Triangle Canopy Waterproof Shade Cloth UV Block Durable Awning Canopy Outdoor Garden Backyard 12' x 12' x 17' Turquoise