*200 GSM breathable HDPE (High Density Polyethylene) material. UV Treated, Resistant to Mold & Mildew. 3 Year Warranty against UV degradation. *Shade can be used over a patio, pool, deck, porch, garden, driveway, courtyard or backyard. Package Contents: 1 Sun Shade Sail with Stainless Steel Hardware Kit and Heavy Duty Nylon Rope(Free gift) *Up to 90% of harmful UV rays are blocked while cool breezes and rain water pass through the knitted mesh. *Sail comes finished with 3rd generation reinforced stitched seam and stainless steel "D" rings on each corner for easy hanging. *You measure, we make it.We are not able to accept returns on custom size orders, please measure carefully before you order. Need more custom sizes, please contact with us.