Textech Industries' CarbonX® is a blend of highperformance fibers that will not burn, melt, or ignite, even when subjected to direct flame. One of the most notable characteristics of CarbonX® is its high Limiting Oxygen Index, or LOI. A fabric's LOI measures the amount of oxygen needed in the environment for combustion to occur. The oxygen volume of air, 20.95, is used as a benchmark when discussing the LOI of a fabric. Any fabric with an LOI under 20.95 will burn in air. CarbonX® boasts an LOI of 55, indicating that it needs almost three times the amount of oxygen in air to combust. What makes this possible is the behavior of the patented fiber blend in the presence of heat and flame. CarbonX® fibers carbonize and expand when exposed to heat and flame, thereby eliminating the oxygen in the fabric. CarbonX® comes in various weights of woven and knit fabrics. Knit CarbonX® is excellent when used in baselayer garments and next-to-skin applications. It is very lightweight, flexible, and soft-to-the-touch, while protecting the skin from burn injuries. Woven CarbonX® fabrics are a great choice for secondary protection garments, such as work shirts, bib overalls, pants, and coveralls.