This is a clear, 100 percent polyester film with black thread reinforcement in an X-pattern. A great choice for windows in sails, X-Ply® Reinforced Monofilm is lightweight with good stability and durability.

To install X-Ply Reinforced Monofilm, use Seamstick double-sided tape to adhere the material to the fabric before sewing and cutting. After the material is in place, use scissors to trim away the fabric and expose the window.