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Naturalex Bio Premium: Complete Test & Review 2026
Our complete test of the Naturalex Bio Premium mattress: natural latex, comfort, support, durability, and value for money. Is it the best organic latex mattress on the market?
Also read: Check out our ranking of the best mattresses 2026 to compare this model with the best offers available.
Our quick opinion
Naturalex is a Spanish brand that has specialized for over 20 years in the manufacture of natural latex mattresses. The Bio Premium is their flagship product: a 100% natural latex mattress, certified GOLS and Oeko-Tex, designed for discerning sleepers who want to combine comfort, health, and environmental respect. After 6 weeks of intensive testing, here is our complete verdict.
Overall rating: 9.1/10
| Criterion | Rating |
|---|---|
| Comfort | 9.0/10 |
| Support | 9.2/10 |
| Durability | 9.5/10 |
| Value for money | 8.8/10 |
| Thermal regulation | 9.5/10 |
Composition and materials
The Naturalex Bio Premium stands out with a composition that few competitors can claim:
- Core: 18 cm of 100% GOLS natural latex, made using Dunlop vulcanization
- Cover: Tencel (lyocell) fabric + organic cotton, zipped and washable at 60 degreesC
- Sides: Bi-comfort - one soft side, one firmer side (or two identical sides depending on the model)
- Total thickness: 21 cm (including 3 cm of quilted cover)
The Dunlop process used by Naturalex results in naturally denser and more supportive latex than the Talalay process, which translates to better durability and firmer support.
Comfort and sensations
First night
Upon delivery, the mattress emits a slight natural rubber odor - completely normal and dissipates within 48-72 hours by airing the room. The Dunlop natural latex is slightly firmer than one might expect at first contact.
The H2 (medium) version we tested offers a unique sensation: the surface yields slightly under pressure but rebounds immediately, without the "sinking" effect felt with memory foam mattresses. This is known as the elastic rebound of latex.
Back position
Excellent. The spine is well maintained in a neutral position. The lumbar hollow is filled without sinking further under the weight of the hips. Our back testers all reported excellent sleep quality without morning pain.
Side position
Very good as well. The shoulders and hips sink enough to relieve pressure points, without the mattress sagging. The gap between the hips and shoulders is well compensated.
Stomach position
Adequate for occasional stomach sleepers. The soft version (H1) is preferred if you primarily sleep on your stomach.
Thermal regulation: the strong point
Natural latex is one of the most breathable materials available. The open-cell structure of Naturalex latex allows for constant air circulation through the mattress, preventing heat buildup.
Our testers who tended to get hot at night unanimously noted a significant improvement compared to their old foam mattresses. Coupled with the Tencel cover (known for its thermoregulating properties), the Naturalex Bio Premium is the best mattress in our panel for people who sweat at night.
Support and back pain
The support of the Naturalex Bio Premium is progressive and elastic - it pushes back proportionally to the pressure applied. This property is particularly beneficial for:
- People suffering from back pain: spinal support is natural, without pressure points
- Couples with different body types: latex responds differently based on weight, offering individualized comfort
- Heavier individuals: no sagging even after weeks of use
After 6 weeks, no signs of sagging or deformation were visible, unlike some foam mattresses we tested.
Durability and maintenance
Lifespan
Natural latex is the most durable material on the mattress market. Unlike foam that compresses gradually, natural latex retains its elastic properties over time. Naturalex guarantees the Bio Premium for 10 years. In practice, with proper maintenance, this mattress can last 15 to 20 years.
Daily maintenance
- Rotate the mattress every 3 months (face and direction)
- Air out the room every morning and the mattress if possible
- Protect with a waterproof mattress protector (recommended to preserve the cover)
- Wash the cover at 60 degreesC if needed
Weight and handling
The weak point: the Naturalex Bio Premium is heavy (about 30-35 kg depending on the size). It requires two people to handle or flip it. This is the trade-off for the density of natural latex.
Price and value for money
The Naturalex Bio Premium is positioned in the premium mid-range. Prices vary by size:
| Size | Indicative Price |
|---|---|
| 90Ă—190 | ~449 EUR |
| 140Ă—190 | ~699 EUR |
| 160Ă—200 | ~849 EUR |
| 180Ă—200 | ~999 EUR |
For a 100% natural latex mattress certified GOLS with a lifespan of 15-20 years, this positioning is excellent. When considering the cost per year of use, it is one of the most economical mattresses on the market.
Regular promotions allow it to be obtained with a 20 to 30% discount on the Naturalex website and at certain retailers.
-> See the Naturalex Bio Premium on naturalex.fr
Comparison with competitors
| Mattress | Material | Price 160Ă—200 | Certification | Lifespan |
|---|---|---|---|---|
| Naturalex Bio Premium | 100% natural latex | ~849 EUR | GOLS + Oeko-Tex | 15-20 years |
| Dunlopillo Latex Comfort | Mixed latex | ~1200 EUR | Oeko-Tex | 12-15 years |
| Merinos Bamboo | Foam + micro-springs | ~599 EUR | Oeko-Tex | 10 years |
| Emma Original | Polyurethane foam | ~699 EUR | Oeko-Tex | 8-10 years |
The Naturalex Bio Premium positions itself as the best value for money in the certified natural latex segment, surpassing Dunlopillo in terms of price/certifications.
Our final verdict
The Naturalex Bio Premium is an outstanding mattress for sleepers looking for:
A natural and certified mattress (GOLS + Oeko-Tex)
A durable anti-allergy solution
Excellent thermal comfort
A long-term investment
It will particularly appeal to those sensitive to synthetic materials, sleepers who get hot, and those suffering from dust mite allergies.
The only notable downside is its significant weight, which requires two people to handle. A detail that is easily forgiven given the overall quality.
Final rating: 9.1/10 - Highly recommended for fans of natural materials.
-> Order the Naturalex Bio Premium on naturalex.fr
Frequently asked questions about the Naturalex Bio Premium
Is the Naturalex Bio Premium really made of 100% natural latex?
Yes, it is certified GOLS (Global Organic Latex Standard), ensuring that the latex used is made of over 95% natural rubber.
Is it suitable for people allergic to dust mites?
Absolutely. Natural latex is naturally antibacterial and resistant to dust mites. The washable cover at 60 degreesC is an added bonus.
Which firmness should I choose?
The medium H2 version is suitable for most sleepers. Opt for H1 if you are light or sleep on your stomach, and for H3 if you are heavy or prefer a firm mattress.
What is the lifespan?
A well-maintained Naturalex Bio Premium mattress can last 15 to 20 years, compared to 8 to 10 years for a traditional foam mattress.