"...Essentially Gore-tex is a Teflon-treated synthetic polymer — a plastic. Teflon is a brand name for tetrafluoroethylene / polytetrafluoroethylene (PTFE). Generally, all plastics are made by the process of combining many toxic chemicals into long chain molecules called polymers using great heat and pressure. The process is never 100% perfect, meaning that there are always toxic chemicals that leach or migrate into whatever comes into contact with them — food, drink, air and you. Teflon is no different. Make no doubt about it, Teflon does leach toxic chemicals into whatever contacts it. According to a Russian study in 1978, in water that had contacted the material, fluor ions and organofluorine compounds were detected.(1) In another study, benzene was found.(2)..."