The XGO base-layer system is available in Acclimate Dry, Flame Retardant and PT wear lines. The garments have been tested by outside testing labs, Natick and in action by our armed forces. The features of the fabrics meet and exceed the military standards. The Acclimate FR is the patented proprietary blend of flame-retardant fibers in all XGO FR garments that are inherent to the fibers and stay in the fabric for the lifetime of the garment. The XGO FR garments meet and exceed the ASTM 06413 standard for after flame and no drip properties.