Alion Home HDPE 180 GSM Sun Shade Sail - Color BLUE Size: (9 ft 10 in) SQUARE 180 GSM breathable HDPE( high density polyethylene) material. UV Treated, Resistant to Mold & Mildew. 3 Year Warranty against UV degradation. Sun shade can be used over a patio, driveway or other outdoor area to protect against UV rays. Up to 90% of harmful UV rays are blocked out while allowing air and water to pass though the mesh. Sail comes finished with 3rd generation reinforced stitched seam and stainless steel "D" rings on each corner for easy hanging. Easy installation and no maintenance required. Need more custom sizes, please contact with us.