Petra's 20 Ft. X 13 Ft. Rectangle Sun Sail Shade. Durable Woven Outdoor Patio Fabric w/Up to 90% UV Protection. 20x13 Foot. (Desert Sand) Dimension: 20' x 13' Heavy Duty Stainless Steel D-Rings High Density Polyethylene(HDPE) Weave Fabric Effective Harmful UV Blocking, Up to 90% Color - Desert Sand