Tested to meet MIL-STD-202, this sleeving meets performance standards for flame retardance. It’s flame rated VW-1 to meet requirements for preventing the spread of flames based on a timed test with vertically suspended material. Made of polyester, it resists some wear and chemicals, so it’s best used in indoor environments. It’s expandable, so it stretches to fit over items for easy installation, then tightens around its contents for a secure fit. The braided construction permits heat and moisture to dissipate.