Ultra High Molecular Weight Polyethylene (ULTRA)
NeilPryde say: This yarn has a similar breaking strength to KevlarTM, but much better UV resistance, making it a fibre of choice for this application. Use of this high strength rip-stop grid allowed us to significantly improve durability and strength. To ensure strong multi-layer lamination, the ULTRA yarns used in NeilPryde sails are treated to insure optimum bonding within the film lamination.
Boardseeker say: Kevlar is commonly used in sails, but this new yarn proves to be even better… Sounds good to us.