Couple this with a higher service mileage and a higher level of comfort thanks to the wider casing and you get a tubular which is especially forgiving with today39s ultra stiff racing bikes 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 tea