Vectran breaker vectran is a synthetically manufactured high tech fibre from a natural model like spider silk vectran is a liquid crystalline polymer lcp vectran is spun from melted liquid polymer vectra and processed further to a multi strand thread spider silk like vectran has an enormous tear resistance at a very low weight exactly the right properties to process into a premium continental bike tyre as a puncture protection insert a vectran breaker is lighter more flexible and p