Ultra firm mattresses provide exceptional full-body support — you'll never wake up worried you're sinking into quicksand.

McKenzie, a Certified Sleep Science Coach and proclaimed mattress expert, has been writing sleep content in the wellness space for over four years. After earning her certification from the Spencer ...

The Plank Firm Mattress is a dual-sided bed that offers a firm and an extra firm surface. To find the best mattress for every ...

They usually have an open coil structure made from strong steel wound into coils to form the extra firm mattress core. Other materials include high-density reflex foam, which provides a solid ...

A true medium-firm mattress often works best for back ... and foam densities as the Loom & Leaf, but with an extra half-inch of memory foam (3 inches instead of 2 ½ inches in the Loom & Leaf).

A measure of how much vibration is transmitted across the mattress; for memory- and latex-foam mattresses, higher scores indicate ease of changing sleep position. The mattress will be delivered to ...

Firm mattress lovers are a rarified group: While some people long to fall asleep on something soft and plush, like a bed of ...

However, the best mattresses for heavy couples are specifically designed to hold up to 500 pounds per sleeper. Our top pick, the Helix Plus, meets the mark with its medium-firm feel, moderate ...