Westex UltraSoft® flame resistant fabrics are a blend of 88% cotton and 12% high tenacity nylon. The nylon fibers are intimately blended with cotton fibers in the warp yarns. These fibers are spun using ring-spinning technology to produce the highest strength fabric possible. The product is engineered to focus the excellent abrasion resistance of the nylon on the face of the fabric to enhance garment wear life, while the cotton fibers are focused towards the skin to optimize comfort.
The fabrics are fully flame resistant and the addition of 12% nylon in no way represents a hazard to the wearer. The 12% nylon actually enhances the protective performance in some cases, such as an electric arc and flash fire exposures.
The significant increase in the abrasion resistance of Westex UltraSoft® has been demonstrated to increase the garment life expectancy conservatively by 50% over 100% cotton fabrics.