How long will a Tempur-Pedic mattress like this last?

This is one of the more durable foam builds, scoring 9.8 on durability. On any foam bed, wear shows first in the comfort layer, and here that is high-density 5 lb proprietary TEMPUR material over a dense support core, the same lineage refined since 1992. That density resists the slow sag and body impressions that end most foam mattresses early. A 10-year warranty backs it, so the plush feel is engineered to hold across many years of nightly use.