kevlar

/K EH1 V L ER0/
noun
  1. 1

    An exceptionally strong, light, man-made fibre used to strengthen cables and sheet materials, e.g. in stab-resistant vests.

  2. 2

    A piece of personal protective equipment made from kevlar, such as a helmet or a vest.

Source: https://en.wiktionary.org/wiki/Kevlar, https://en.wiktionary.org/wiki/kevlar