Ultron nylon 6,6 carpet fiber is the preferred premium branded fiber. With a tighter molecular structure, a higher degree of internal bonding and maximum alignment of molecular chains, Ultron fiber has 20 percent higher resilience and a 12 percent harder fiber surface than other nylon fibers. Ultron is designed to last a lifetime adding ageless beauty to commercial carpet. Ultron fibers stay beautiful, colorful and brilliant, ensuring superior appearance retention for the life of your commercial installation.