Kevlar® is a para-aramid (polyparaphenilen-terephtalamid) fiber, produced by DuPont. Kevlar® fiber is five times stronger than steel, having the same weight. Its cutting resistance is five times higher than that of skin. It is exceptionally strong and rigid, has fixed sizes and high temperature and chemical stability.
Kevlar® preserves its strength and elasticity at low temperatures — even at cryogenic temperatures (-196°C). Moreover, at low temperatures it becomes even a bit stronger. While heating, Kevlar® does not melt. The fiber dissolves at relatively higher temperatures (430–480°C).