Architec 400 is a 400 GSM High Density Polyethylene (HDPE) shade sail fabric formed through a combination of monofilament yarn and Polyfab’s new Ovalon™ monofilament yarn for maximum strength, minimal stretch and UV protection of 90 percent and greater. This shade sail fabric is a great option for shade structures as it is durable and comes in a variety of colors and textures. The fabric is made with shade sail design in mind. Add this high quality shade sail fabric to shade sail structures to enjoy the cool shade outdoors.