The lifespan of any mattress depends on a variety of factors, including the quality of the materials and construction, and how much you (and a sleep partner) weigh. As we note above, we don’t have data to confirm the durability of the proprietary Purple Grid top layer in Purple mattresses. The polyfoam layers found in Purple mattresses range from 1.8 to 2 pounds per cubic foot, which suggests decent durability. The Purple Hybrid and the Purple Hybrid Premier include 540 support coils (in a queen), which are a relatively thick 13¾ gauge.
That said, when we analyzed good-quality owner reviews made between 2017 and 2019 about Purple mattresses, we did find a number of complaints about deterioration or premature sagging. Purple offers a 10-year limited warranty on all of its mattresses; this includes replacing the mattress if it develops body indentations that are deeper than 1 inch, or if any other mattress materials crack, split, or otherwise fail during normal use.
