Before we present our picks for best no-sag beds, let’s talk briefly about why mattresses lose support and firmness as they age. Nearly all mattresses will sag over time due to how they shape your body. Foams, other fabrics, and innerspring and mixed mattresses can lose some of their tension over time.

Top Mattresses for Heavy Persons

Below is the top best king memory foam mattress. These mattresses are heavier than regular options, so they can offer support for heavy individuals.

A mattress can have a small amount of sag. A mattress with a bit of sag may be helpful for people who sleep on their stomachs.

While mild sagging may not be a problem, excessively sagging mattresses can hinder people’s ability to align their spine while they sleep. This can make it hard to get comfortable at night and can also cause pain in the shoulder, back, hip, or neck the next day.

One reason a mattress may sag is because of poor foundations, uneven loads, damaged liquids, and lower-quality materials.

Use Low-Quality Materials: Mattresses that sag due to their lower-quality materials. Low-quality mattresses may be made with polyurethane foams or lower-density memory Foams. These foams simply don’t hold up to the higher quality foams in terms of structural durability and life expectancy. The more durable materials can prevent indentations or sag.

Uneven Loads: A mattress that isn’t properly balanced can cause sagging. The mattress will not be as supportive as the rest of the most used areas. It is possible to make the mattress more evenly used and reduce sagging by flipping it (or turning it upside down if the design allows).

Damage Caused by Liquids: Should liquids penetrate a mattress cover, it can cause mattress damage and affect its ability to provide support. Although many mattress covers are waterproof, it is still wise to buy a separate waterproof covering to protect against this possibility.

Poor Foundations: Placing your bed on the wrong type of foundation can lead to it not receiving the necessary support to keep it from sagging. Foundations with slats, particularly those that are less spaced, can cause the mattress to sag in the spaces between the boards. Many mattress manufacturers recommend one foundation type for their products. In some cases, these recommendations may help you avoid warranty invalidation.

Below are some considerations when looking for a mattress that wont sag and lasts a long time.

Foam Type: Different foam types are more likely to sag. Latex foams tend to be more durable and long-lasting than memory foams or polyfoam. With repeated usage, memory foam can become less resilient and not be able to return to its original state. This wear can cause memory foam to lose its original shape over time.

Although latex might sag after five years of use, it is much less noticeable than memory. For a memory foam feel, choose a high-density foam mattress.

Coils: Coils provide additional support and can help to prevent sag. Pocketed coils are less likely than innerspring coil mattresses to sag. This is because each individual coil responds to the motion of the bed independently. A hybrid mattress can offer you a softer foam or latex sleeping surface as well as more supportive and snag-proof coils.