Foam Mattress: Complete Guide 2026 (PU, HR, Memory Foam)

Foam mattresses account for over 65% of bedding sales in France in 2026. Their success comes down to an attractive price-to-quality ratio, a wide range of firmness levels, and technologies that improve every year. But not all foam mattresses are created equal: density, foam type, and material quality make a huge difference between a mattress that lasts 3 years and one that will serve you well for 10 years.

This complete guide helps you understand the different foam technologies, tell the good from the bad, and choose the right mattress for your body type, budget, and sleep habits.

What is a foam mattress?

A foam mattress is made of one or more layers of polyurethane (PU) foam or its derivatives (HR, viscoelastic). Unlike spring or latex mattresses, it has no internal metal structure or natural rubber coagulation. Its performance depends entirely on the chemical and physical quality of the foams used.

In short: A foam mattress offers enveloping comfort and an excellent price-to-quality ratio, but its durability depends crucially on the density of the foams used. Always choose a density of ≥ 30 kg/m³ for daily use.

The different types of foam

Foam type	Typical density	Durability	Comfort	Indicative price
Classic PU	18-25 kg/m³	3-5 years	Soft, low support	100-300 €
HR foam	30-45 kg/m³	7-10 years	Balanced, responsive	300-700 €
Memory foam	50-85 kg/m³	8-12 years	Enveloping, slow	400-1200 €
Gel foam	40-60 kg/m³	7-10 years	Cooling	500-1000 €

Polyurethane (PU) foam: the entry-level option

How does PU foam work?

Polyurethane foam is made from polyols and isocyanates that, when mixed and expanded, form a flexible cellular structure. Density — expressed in kg/m³ — determines its firmness and durability. The higher the density, the tighter the cells and the more resistant the foam is to sagging.

Basic PU foam mattresses are the cheapest on the market. They are suitable for:

• Guest beds or spare rooms
• Very tight budgets (< 200 €)
• Temporary use (students, short-term rentals)

Their main drawback: rapid sagging. A 20 kg/m³ foam loses 30 to 50% of its thickness within 2 to 3 years of daily use. You'll end up sleeping on the slatted base, which causes back pain.

How to recognize good PU foam?

• Density ≥ 25 kg/m³: minimum for regular use
• Thickness ≥ 15 cm: below this, comfort is insufficient
• CertiPUR certification: guarantees the absence of harmful substances (CFCs, heavy metals)
• Warranty ≥ 5 years: a sign the manufacturer believes in its durability

HR (High Resilience) foam: the best value for money

What is HR foam?

HR foam is a superior-quality polyurethane with increased elasticity. "HR" stands for High Resilience — it returns to its shape faster after compression than standard foam. This translates to better dynamic support and a more pronounced "bounce" feel.

HR foam mattresses dominate the mid-range segment (300-700 €). Online brands like Emma, Tediber, Hypnia, and Simba almost all use HR foams in their mattresses, often combined with memory foam or latex layers.

Advantages of HR foam

1. Superior durability: with a density of 35-40 kg/m³, an HR mattress lasts 7 to 10 years
2. Dynamic support: the foam adapts to movement without creating a sinking sensation
3. Breathability: the more open cells allow better air circulation than basic PU
4. Variety of firmness levels: from soft (3/10) to firm (8/10), there's an HR foam for every profile
5. Affordable price: excellent value for money in the 300-600 € range

Disadvantages of HR foam

1. Moderate heat retention: less than memory foam, but more than latex
2. Shorter lifespan than latex: 7-10 years versus 15-20 years for natural latex
3. Variable quality: the term "HR" is not regulated; some brands use basic PU and call it HR

Memory foam (viscoelastic): enveloping comfort

Memory foam is a viscoelastic material originally developed by NASA. It reacts to body heat and weight, gradually adapting to your shape. Unlike HR foam which bounces back, memory foam "remembers" the impression for a few seconds.

We have a complete guide dedicated to memory foam mattresses if you want to dive deeper into this specific topic.

How to choose your foam mattress

Based on your weight

Weight	Recommended density	Firmness	Foam type
< 60 kg	≥ 25 kg/m³	Soft to medium (3-5/10)	PU or soft HR
60-90 kg	≥ 30 kg/m³	Medium (5-6/10)	HR or memory foam
90-120 kg	≥ 35 kg/m³	Medium-firm (6-7/10)	Dense HR or memory foam
> 120 kg	≥ 40 kg/m³	Firm (7-8/10)	High-density HR or hybrid

Based on your sleep position

Side sleeper: Choose a soft to medium foam (4-5/10) to relieve pressure on your shoulders and hips. Memory foam is ideal for this position.

Back sleeper: A medium foam (5-6/10) maintains the natural lumbar curve. HR offers an excellent support/comfort balance.

Stomach sleeper: Opt for a firm foam (6-7/10) to prevent lumbar hyperextension. Firm HR or a hybrid mattress are preferable.

Mixed position: A medium HR foam (5/10) is the most versatile choice.

Based on your budget

Under 300 €: You'll find basic PU foam mattresses. Limit these to temporary or occasional use.

300-600 €: This is the ideal range for a quality HR foam mattress. Models like Emma Original, Hypnia Bien-être Absolu, or Tediber L'Incroyable fall in this range.

600-1000 €: You gain access to multi-layer mattresses with premium memory foam, thermoregulating gel, or patented technologies.

Over 1000 €: The high-end segment with densities > 80 kg/m³, premium covers, and 10-15 year warranties.

The best foam mattresses in 2026

Based on our in-depth testing, here are the foam mattresses that stand out in 2026:

1. Emma Original — Best value for money. Multi-layer HR foam, 100-night trial, ~419 €.
2. Tediber L'Incroyable — Most comfortable. Patented Tediber technology, excellent thermoregulation, ~699 €.
3. Hypnia Bien-être Absolu — Best price. Quality HR foam at a very competitive price, ~299 €.
4. Simba Hybrid — Most breathable. Combines Simbatex foam and 2500 micro-springs, ~699 €.

For a detailed comparison, check our best mattresses 2026 comparison and our specific selection of best memory foam mattresses.

Maintaining a foam mattress

To maximize the lifespan of your foam mattress:

• Air it out: leave the mattress uncovered for 2-3 hours a day during the first few weeks
• Rotate it: every 3-6 months (if reversible) to even out wear
• Use a mattress protector: waterproof and washable at 60°C
• Avoid moisture: foam absorbs moisture; air the room regularly
• Don't fold it: PU and HR foam can crack if forcefully bent

FAQ

Conclusion

The foam mattress remains the most popular choice in France in 2026, and for good reason. Its price-to-quality ratio, variety of firmness levels, and customizable comfort make it a suitable solution for the majority of sleepers.

To choose wisely, focus on two essential criteria: density (≥ 30 kg/m³ for daily use) and firmness suited to your weight and sleep position. Avoid basic foam mattresses (< 25 kg/m³) for your main bed — they'll sag in 2-3 years and end up costing you more to replace than a good HR mattress from the start.

Ready to choose? Check our best mattresses 2026 comparison to find the model that matches your profile and budget.