Memory foam is one of the most popular mattress materials for good reason. It conforms to your body, absorbs motion, and relieves pressure in ways traditional innerspring mattresses can't match. But not all memory foam mattresses are built the same, and the wrong one can leave you sleeping hot, sinking too deep, or waking up stiff.
This guide explains how memory foam works, what to look for when shopping, and which sleepers it works best for — so you can make a confident decision.
Memory foam is made from viscoelastic polyurethane foam. It responds to body heat and pressure, softening and contouring to your shape as you lie on it. When you get up, it slowly returns to its original form — that's the "memory" part.
This material was originally developed by NASA for aircraft seat cushions. It found its way into mattresses in the late 1990s and has been refined significantly since then.
Memory foam isn't perfect for everyone. Know these before you buy:
Not all memory foam is the same. Here's what the different formulations mean in practice:
| Type | What It Does | Best For |
|---|---|---|
| Traditional memory foam | Classic contouring and pressure relief | Pressure relief, pain relief |
| Gel-infused foam | Pulls heat away from body surface | Hot sleepers |
| Copper-infused foam | Cooling + antimicrobial properties | Hot sleepers, hygiene-conscious |
| Open-cell foam | Improved airflow through foam structure | Temperature regulation |
| Plant-based foam | Uses natural oils in formulation | Eco-conscious buyers, reduced off-gassing |
For sleepers who want the contouring of foam with more responsiveness, a hybrid mattress — foam layers over a coil system — is often the better choice.
Density is measured in pounds per cubic foot (PCF). Higher density = more durable and more supportive, but also heavier and more expensive. For a mattress intended to last, look for comfort layers with at least 3–4 PCF and support cores at 1.5–1.8 PCF or higher.
ILD measures firmness. Lower ILD = softer. Higher ILD = firmer. Most memory foam mattresses for general use range from 10–16 ILD in the comfort layer. This number isn't always published but can be asked about in-store.
If you tend to sleep warm, prioritize mattresses with gel or copper-infused foam, phase-change material covers, or open-cell construction. Marketing language alone isn't enough — test the feel in person.
Most quality memory foam mattresses are 10–14 inches thick. The comfort layer (the top portion of foam) typically accounts for 2–4 inches. Thicker comfort layers provide more contouring but also more sinkage.
Your body needs time to adjust to a new mattress — typically 3–4 weeks. Look for a meaningful trial period before committing. LA Mattress Store offers a 120-night comfort guarantee on eligible mattresses.
Here are some of the standout memory foam options available in our showrooms and online:
A plush California King option with Serta's TempActiv Max Gel Memory Foam, Air Suspension Technology for airflow, and UltraCold System for temperature regulation. Best for: side sleepers and those who sleep warm. Not ideal for: those who prefer firm support.
Copper gel memory foam with an innerspring support system. The copper infusion enhances cooling and offers antimicrobial properties. Best for: back and stomach sleepers, hot sleepers. Not ideal for: side sleepers who need a softer surface.
Tempur-Pedic's TEMPUR-APR+ material provides exceptional pressure relief and adaptability. The SmartClimate Dual Cover System helps regulate temperature. Best for: those who want the deepest, most conforming foam feel. Not ideal for: budget-conscious shoppers or those who dislike sinking.
Sealy's Immersion Advanced Memory Foam with zoned support and DuraFlex edge system. A solid medium-feel hybrid for most sleepers. Best for: combination sleepers, couples. Not ideal for: those who want a very soft or very firm feel.
Visit one of our 5 LA showroom locations to test these in person. Our sleep advisors can walk you through the differences and help match you to the right option.
A mattress made with viscoelastic polyurethane foam that responds to body heat and pressure, contouring to your shape for personalized support and pressure relief.
High-quality memory foam mattresses typically last 8–10 years. Longevity depends on foam density, how the mattress is used, and whether it's properly supported and protected.
Traditional memory foam can retain heat. Modern versions with gel, copper, or open-cell construction sleep significantly cooler. If you're a hot sleeper, specifically look for mattresses with these features and test them in person.
They can be, especially for side sleepers with hip or shoulder pain. The key is finding the right firmness — too soft and you'll sink too far, too firm and you won't get enough contouring. A medium or medium-firm memory foam or hybrid is the most common recommendation.
Yes. Memory foam is one of the most compatible materials for adjustable bed bases. Its flexibility allows it to bend with the base without losing structural integrity.
Start with your sleep position: side sleepers generally need medium to medium-soft; back sleepers medium to medium-firm; stomach sleepers firm. Then test in person — firmness ratings vary by brand, and only lying on a mattress tells you how it actually feels for your body.
Memory foam is naturally resistant to dust mites and allergens because it lacks the void spaces that traditional innerspring mattresses have. Many also come with hypoallergenic covers. A mattress protector adds an additional layer of protection.
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