Kevlar® is stronger than steel – and lighter. 4 kinds: Type 29 better in flex than type 49. Type 49 50% better in stretch than 29. Twaron® is very similar to type 49. Technora® is between 29 and 49, is available in black and gold.


  • 5 times better stretch than Polyester, double that of Pentex®.
  • Aramide yarns can be woven to a tight fabric and bonds well on Mylar®.


  • Aramids have only moderate UV resistance, and poor with repeated flex.
  • Technora® is somewhat better in both these issues.