5 Polyurethane Foam Mattresses [Reviews 2020]

What to Check Before Buying a Polyurethane Foam Mattress

Polyurethane foam covers a wide range of materials, from basic support foam used in budget mattresses to high-resilience foam found in more durable designs. Two mattresses that both say "polyurethane foam" on the label can feel and age very differently, so it helps to know which details actually matter when you compare options.

Foam density

Density, usually listed in pounds per cubic foot, is one of the most useful indicators of how long a foam layer will hold its shape. Lower-density foams tend to be lighter and less expensive but can soften and develop body impressions sooner. Higher-density foams generally resist sagging better. If a manufacturer does not publish density figures, consider asking before you buy.

Firmness and sleeping position

Firmness is often described on a scale from soft to firm, but it is subjective. As a general guide:

• Side sleepers often prefer a softer to medium surface that lets the shoulders and hips sink in slightly.
• Back sleepers commonly do well on medium to medium-firm support that keeps the spine aligned.
• Stomach sleepers usually need a firmer surface so the hips do not drop too far.

Body weight also plays a role: heavier sleepers may find a mattress feels softer than its rating suggests.

Heat and off-gassing

Solid foam can retain more body heat than spring-based designs. Open-cell structures, perforated layers and breathable covers can help. New foam mattresses also often have a noticeable smell when unpacked; airing the mattress in a ventilated room for a few days usually reduces it. Independent certifications for foam content and emissions are worth looking for if this is a concern.

Trial periods and warranties

Because it can take several weeks to adjust to a new mattress, a home trial period is valuable. Read the terms carefully: some retailers require a minimum number of nights before a return, and some charge pickup or restocking fees. Warranties typically cover defects such as excessive sagging beyond a stated depth, not normal softening, so check how that depth is defined.

Finally, if you have ongoing back pain or sleep problems, a mattress is only one factor. Speaking with a doctor or physiotherapist can help you understand what kind of support suits you best.