Nylon Type 6,6 fiber: The strongest, most resilient nylon carpet fiber available . . . for outstanding resistance to wear, texture loss, crushing and fading. Lifetime protection against annoying static shock. LotusFX™ Fiber Shield, unique to STAINMASTER® carpet, reduces soil accumulation and limits its ability to stick to the fiber. Built into the carpet during the manufacturing process, prevents most food and beverage spills from becoming stains.