The Carbon GPL cloth uses large denier Carbon yarns that allow the fiber to bend repeatedly without breaking along with Technoa X-Ply and scrim to hold the fibers in column and give off thread line load protection. These fibers are also very U.V. resistant giving even more durability. Since the Carbon is so low stretch the films never get stretched once again improving durability in the sail. Ullman Sails uses Dimension Polyant Ultra-Bond seaming making the sails virtually bullet proof.
For sails that will perform for a long time and bring you to the front of your fleet, it is a great choice.
For more information on these fibers click here http://www.ullmansailssandiego.com/sailing-news-san-diego-southern-california.php?news_id=62