6 Signs of a Bad Mattress Mattresses don’t last forever! If your mattress is over six years old, it’s already through more than 50% of its life. Upgrading is worthwhile when comfort levels drop, but you might be best off upgrading now if you notice degradation. Most mattresses last for around ten years, with some high-quality pocket spring mattresses lasting up to 15 years. You get a longer lifespan from a better mattress, but only some have several hundred pounds […]