The Purple material, also known as the Smart Comfort Grid™, should never break down over time. The Purple grid distributes your weight and helps lengthen the bed's lifespan. That being said, the high-qualiy polyurethane foam supporting the Purple has a 10-year lifespan. It is standard, and recommended, to repace your mattress every 7-10 years. We also offer a 10-year warranty to ensure many nights of pure bliss.