Saatva Contour5

The usual complaint about a deep memory-foam bed is that the heaviest part of you — the hips — sinks furthest, which rounds the lower back out of line. Saatva's answer is the patented Lumbar Zone PCM Matrix: a layer that combines phase-change material with firmer support material through the lumbar section specifically, so the middle of the bed resists more than the shoulders and legs do.

Putting phase-change material inside that layer rather than only in the cover is the other notable choice. Cover-level cooling sits above you; a phase-change layer deeper in the stack sits where memory foam actually traps heat.

Saatva names the foams: gel-infused 4 lb memory foam above, and a three-inch 5 lb memory foam core below. Most brands at this price do not publish density at all, and density is one of the few construction facts that genuinely correlates with how long a foam layer holds its shape. Being able to read the number is a real advantage when you are comparing $2,500 memory-foam beds.

We stop short of predicting a lifespan from it. A 5 lb core is a high-density memory foam by industry convention, and the lifetime warranty signals Saatva's own confidence, but no density figure entitles anyone to promise you a specific number of years.

The Contour5 comes with free white glove delivery, in-room setup and removal of your old mattress, a 365-night trial and a lifetime warranty. That combination is unusual, and it is a meaningful part of what separates a $2,674 Saatva from a $1,200 boxed memory-foam hybrid with comparable-sounding layers.

One caveat to read before you order: Saatva charges a transport fee on trial returns. The trial is long and generous, but it is not free to change your mind, and the mattress is a 12.5-inch all-foam build that you will not be shipping back yourself.