In the usual life of a sail, many factors influence its life expectancy. However, when sailing across the oceans, for long periods at a time and often in sunny or even tropical climates, one single factor becomes paramount: The sun. We all love the sun but we all also know of the destructive power of the UV rays. Continuous exposure to UV will, sooner or later, affect any surface – from human skin to sails. Sailcloth will become, over time, brittle and weak and will eventually rip and tear.