The Next Generation of FR Fabric Technologies


Black Sigma


Navy Sigma


Yellow Sigma


Orange Sigma


Tan Sigma


Blend: 45% meta-aramid / 17% Polyamide/ 6% para-aramid / 32% Lenzing® FR
Weight: 7 oz.
Color: Tan, Black, Yellow, Orange, and Navy
Weave: Comfort twill
Certified: NFPA 1977, NFPA 1975, NFPA 1951


  • Tested by Underwriters Laboratories (UL)
  • Tested by DHS/Natick in one of the largest
    Wildland wear trials ever conducted
  • Tested by Natick (U.S. Army, U.S. Marines,
    U.S. Air Force, U.S. Navy


  • Proven performance with certification to
    NFPA 1977, 1975, and 1951
  • Proven performance as the top rated fabric in
    the largest Wildland wear trial ever conducted
  • Proven performance as the FR fabric of choice
    for numerous U.S. Marine and U.S. Army garment
    applications (with over 100,000 garments worn
    in Afghanistan and Iraq)

The Largest Metro Fire departments and US Military branches have trusted in and specified Sigma through the years...below are just a few:

California Fire

LA City

Oklahoma City

Fort Worth

San Diego

US Army

US Airforce

US Marines

In 2010, the U.S. military challenged the industry to develop a new flame resistant (FR) fabric that would offer excellent comfort, durability, and protection from heat and flame. After years in the lab, Sigma™ is now worn by over 100,000 U.S. soldiers across the globe to protect against the same dangers experienced by wildland fire fighting and USAR teams — flash fire and fatigue.


The Department of Homeland Security (DHS) and Natick, working with Cal Fire, the National Forestry Service, and dozens of top departments along the West Coast, had a similar challenge: create a singlelayer wildland garment with improved protection and breathability.


After a two-year wear trial involving 1,000+ wildland firefighters, the DHS wear trial report concluded “The higher preference ratings for Sigma are most likely due to the better heat transfer performance, as the Sigma fabric received the highest ratings in both system heat dissipation and comfort by a noticeable margin.”