The memory foam mattress has revolutionized the way we sleep. Designed to contour to the body’s curves, it promises precise support, enveloping comfort, and better sleep quality. But with the multitude of options available, how can you be sure to make the right choice? This comprehensive guide helps you understand the benefits of memory foam mattresses, decipher essential criteria, and find the model suited to your needs.

Why choose a memory foam mattress?

An adaptive mattress for better sleep

Memory foam, also known as viscoelastic foam, reacts to the body’s heat to soften and precisely conform to your body shape. It offers:

  • A reduction in pressure points (hips, shoulders)
  • Optimal spinal alignment
  • Improved blood circulation
  • Customized comfort, ideal for sensitive sleepers

Health benefits

According to the National Institute of Sleep and Vigilance (INSV), a suitable mattress can reduce micro-awakenings and back pain. For individuals suffering from back pain or sleep disorders, memory foam mattresses are often recommended by sleep professionals. Also, check out our guide to mattresses for back pain for more information.

Important selection criteria

  1. Foam density
    • < 40 kg/m³: entry-level, limited comfort
    • 40–60 kg/m³: good comfort/support compromise

    • 60 kg/m³: high-end, precise support, increased longevity

  2. Total thickness and foam
    A memory foam mattress should have at least 5 cm of viscoelastic foam for a true “memory” effect. The total thickness can range from 18 to 30 cm depending on the models.
  3. Firmness level
    • Soft: for lighter individuals or those who prefer a plush feel
    • Medium: versatile, suitable for most
    • Firm: for heavier individuals or those suffering from back pain
  4. Hybrid or 100% foam technology
    Some mattresses combine memory foam and pocket springs for better dynamic support and ventilation.
  5. Breathability
    Memory foam can retain heat. Opt for models with ventilated foam, thermoregulating fabric, or air channels.
  6. Budget
    • Entry-level: €200–400
    • Mid-range: €400–800
    • High-end: €800 and above

Our product recommendations

1. Emma Original II

Emma Original Ii

A well-balanced classic for all sleepers.

  • Description: three-layer foam mattress with one layer of memory foam
  • Advantages: universal comfort, good value for money, washable cover
See the Emma Original II Plus mattress on Amazon

2. Slome (formerly Hypnia) Supreme Well-Being

Hypnia Matelas Bien Etre Supreme 140 X 190 Cm 738e

The best choice for back pain.

  • Description: 30 cm thick, memory foam + pocket springs
  • Advantages: ergonomic support, sleeping independence, breathability
See the Slome (formerly Hypnia) Supreme Well-Being mattress

3. Tempur Pro® Plus SmartCool™

Tempur Pro Smartcool

A high-end 100% memory foam mattress, made in Denmark.

  • Description: Tempur viscoelastic foam with SmartCool™ cooling cover
  • Advantages: exceptional body contouring, maximum pressure point reduction, European manufacturing, multiple firmness levels
View on Amazon

4. Mello Relax

Relax Web 02 1600x

An affordable and reliable option for a small budget.

  • Description: high resilience foam and memory foam
  • Advantages: plush comfort, good support, fast delivery
See the Mello Relax mattress on mello-matelas.fr

5. SOMEO Dream 500 Memory Foam

Songe 500 Ambiance Jpg

A French alternative that combines comfort, support, and breathability.

  • Description: hybrid mattress combining memory foam and pocket springs, 25 cm thick.
  • Advantages: adapted morphological support, sleeping independence, optimal ventilation thanks to the springs, French manufacturing.
View on Amazon

Expert advice

Mistakes to avoid

  • Choosing solely based on price
  • Neglecting foam density or thickness
  • Forgetting to test the firmness suitable for your body type
  • Ignoring warranties and trial periods

Maintenance tips

  • Use a suitable bed base (slats or box spring)
  • Air the mattress regularly
  • Clean the cover (if removable) every 3 months
  • Rotate the mattress head/foot every 2 months

For which profiles?

  • Sensitive sleepers: soft mattress with thick memory foam
  • Couples: foam + pocket springs for sleeping independence
  • People with back pain: dense foam with firm support

FAQ

Does the memory foam mattress get too hot?This is the main criticism directed at this technology: viscoelastic foam reacts to body heat and tends to retain it, especially in entry-level 100% foam models. However, manufacturers have made significant progress. Opt for open-cell or perforated foam, a thermoregulating fabric (Tencel, cooling fibers), or a hybrid model combining memory foam and pocket springs, which ensures much better airflow. If you sweat a lot, avoid dense non-ventilated foams and consider a breathable mattress protector rather than just a waterproof one — see our guide on [choosing a mattress when you sweat a lot](/fr/guides-achat/choisir-son-matelas/comment-choisir-un-matelas-quand-on-transpire-beaucoup/).
Is it suitable for all sleepers?Yes, as long as you choose the right firmness and density according to your body type.
What is the average lifespan?A good quality memory foam mattress lasts on average between 8 and 12 years, provided it is well maintained. Foam density is the determining factor: below 40 kg/m³, the foam compresses faster and loses its memory effect after a few years, while foam of 50 to 60 kg/m³ retains its properties much longer. To extend its lifespan, use a suitable bed base, air the mattress regularly, rotate it head/foot every two months, and protect it with a mattress protector. Visible sagging or degrading support are signs that it is time to replace it.
Can I use a spring bed base?This is not recommended. A spring bed base absorbs and flexes under weight, which contradicts the precise and stable support provided by memory foam: the sleeping surface becomes unstable and the mattress wears out prematurely. Prefer a fixed slatted base (preferably close together, with a spacing of less than 7 cm) or a firm box spring, which offers a flat and even support. A rigid sleeping surface allows the foam to fully perform its role of contouring to the body and maintains spinal alignment. Also, ensure that the bed base provides good ventilation to limit moisture.
Is a memory foam mattress suitable for side sleepers?Yes, it is even one of its best applications. Viscoelastic foam conforms to the shoulder and hip, reducing pressure points on these sensitive areas. Choose a soft to medium model so that the foam sinks enough to keep the head and neck aligned with the spine. For more information, consult our [guide to the best mattress for side sleepers](/fr/guides-achat/choisir-son-matelas/guide-d-achat-choisir-le-meilleur-matelas-pour-les-dormeurs-sur-le-cote/).