Ben Trapskin

What 1.5, 1.8, 3, 4 and 5 lb mattress foam means—and why density predicts material use and durability, not firmness.

Learn which mattress specifications matter, which are marketing, and how to read foam density, IFD, coil gauge, zoning and layer thickness.

California-made mattresses we can document with the brand’s own published manufacturing statement, plus measured scores from our Encinitas showroom testing.

A side-by-side comparison of mattress warranties using each brand’s own published terms: sag thresholds, prorating, foundation rules and who pays shipping.

US-made mattresses we can document, each with the brand’s own published manufacturing statement, plus our measured test scores.

Mattresses we can document as fiberglass-free, each with the brand’s own published fire-barrier statement, plus our measured test scores.

Ten mattresses ranked for couples using measured motion isolation, edge support, cooling, pressure relief, responsiveness, and overall performance.

An adjustable base only works if the mattress on top of it flexes. These are the beds we have measured that bend cleanly at the head and knee hinge, with heights, firmness and prices.

Split king means two Twin XL mattresses on one base, so each side can sit up, firm up or cool down on its own. These are the split-king beds we actually sell and have measured.

The mattresses that stopped the most movement in our standardized motion-transfer test, ranked from our own lab data.