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Three layers of firm natural latex — designed for sleepers who need maximum structural support

Altum naturaliste — Ferme

Altum naturaliste — Ferme

Le matelas Altum est composé de trois couches de latex naturel ferme — la construction structurelle la plus profonde de la gamme de matelas tout en latex. Conçu pour les personnes qui dorment sur le dos ou sur le ventre et qui ont besoin d'un soutien ferme sur l'ensemble du matelas, et pas seulement en surface.

Le latex naturel conserve ses propriétés structurelles au fil du temps — il provient de fournisseurs certifiés GOLS et a une durée de vie testée de plus de 20 ans.

• Trois couches de latex naturel ferme — le soutien structurel le plus profond de la gamme de matelas en latex
• Conçu pour les personnes qui dorment sur le dos ou sur le ventre et qui ont besoin d'un soutien ferme et constant
• Compression de surface minimale — le corps est maintenu élevé et soutenu
• Latex naturel provenant de fournisseurs certifiés GOLS — propriétés structurelles maintenues pendant plus de 20 ans

Choisissez votre taille :
Prix habituel €1.323,00 EUR
Prix habituel Prix soldé €1.323,00 EUR
Vente Épuisé
Taxes incluses. Frais d'expédition calculés à l'étape de paiement.
90-Night Risk-Free Trial
10-Year Warranty
Free EU Delivery — No Hidden Costs
Certified Natural Materials — No Foam, No Chemicals
Designed and manufactured in Europe
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Is this firm latex mattress right for your sleep style and body type?

Designed for sleepers who need maximum support, better alignment, and a more stable sleep surface.

Back sleepers

Back sleepers

Offre un soutien maximal pour maintenir la colonne vertébrale correctement alignée tout au long de la nuit. La construction ferme à trois couches aide à prévenir l'enfoncement du bas du dos et réduit la tension.

Stomach sleepers

Stomach sleepers

A stable, firm surface keeps the hips elevated and prevents excessive sinking, helping maintain a healthier spinal position.

Medium to heavy sleepers

Medium to heavy sleepers

Three firm latex layers create a deeper support system that maintains its shape under higher weight. This reduces compression, improves weight distribution, and ensures consistent support over time.

Dormeurs qui préfèrent une sensation ferme

Dormeurs qui préfèrent une sensation ferme

Crée une surface stable et structurée sans la sensation de "s'enfoncer" - idéale pour ceux qui recherchent un soutien et un contrôle maximum.

Si votre matelas manque de soutien, votre sommeil peut en souffrir.

The three-layer firm latex construction is designed to eliminate instability and deep compression - helping improve alignment, reduce strain, and create a more controlled sleep surface.

 Lower back pain

 Lower back pain

Sleeping on a surface that lacks proper support can strain your lower back. Three firm latex layers keep your body elevated and aligned, reducing pressure and helping maintain a healthier spinal position.

Sinking without support

Sinking without support

Excessive sinking can reduce stability and affect how your body is supported. The multi-layer firm structure limits compression and keeps your body evenly supported throughout the night.

Difficulté à bouger pendant le sommeil

Difficulté à bouger pendant le sommeil

Softer surfaces can make movement feel restricted. A responsive, firm three-layer construction makes turning easier and helps your body stay stable as you move.

Weak edge support

Weak edge support

Unstable edges can make sitting or getting out of bed difficult. A firmer, deeper construction provides a more stable edge, making it easier to sit, stand, and use the full mattress surface.

Sleep closer to nature

Create a calm and balanced sleep environment inspired by natural materials.

Inside the Naturalist Full Latex Plus Mattress – Firm

Une construction en latex à trois couches conçue pour offrir un soutien maximal, une compression minimale et une stabilité structurelle durable.

1

Organic cotton and wool cover

Breathable natural fabric that regulates temperature, manages moisture, and creates a clean, comfortable sleep surface.

2

7-zone firm natural latex comfort layer

A firm latex layer on top provides immediate support and helps keep your spine aligned from the first point of contact. Zoned support adapts to different parts of the body for better pressure distribution.

3

Dual-layer firm latex support core

Two firm latex layers are combined into a reinforced base structure that works as a single support system. This core distributes weight evenly, resists deep compression, and keeps your body elevated and stable - even under higher load.

Natural materials that support healthier sleep

The Naturalist Hybrid Mattress is made using certified natural materials selected for breathability, durability and comfort.

Natural Dunlop Latex

Natural latex provides responsive pressure relief and adapts to the body's natural curves.

Organic Cotton and Wool

Breathable natural fibres help regulate temperature and manage moisture.

Breathable natural structure

Natural materials allow air to circulate through the mattress and help reduce heat build-up during sleep.

Materials & construction

Explore the materials and structure inside your mattress.

Certifications

GOLS certified latex

GOLS certified latex

Assure que le latex est fabriqué à partir de matières premières biologiques certifiées et respecte des normes environnementales et sociales strictes.

Textiles certifiés GOTS

Textiles certifiés GOTS

Couvre le coton et la laine biologiques, garantissant une production responsable, un traitement sûr et une traçabilité.

Dunlop latex

Dunlop latex is a natural material made from the sap of rubber trees, processed using a traditional molding and vulcanization method.

During production, the latex is poured into a mold and gently settles, creating a slightly denser and more stable structure. This results in a more supportive and durable material compared to other latex types.

It has a naturally elastic feel, allowing it to respond to body movement while maintaining consistent support throughout the night.

Latex firmness

Soft latex (~65 kg/m³)
Provides higher elasticity and contouring, allowing the body to sink slightly into the surface. Helps reduce pressure on shoulders and hips.

Firm latex (~85 kg/m³)
Offers greater resistance and stability, supporting the body more firmly and helping maintain proper spinal alignment.

Latex à 7 zones

Latex à 7 zones

Schéma de structure de zone

Pocket springs

Zoned support
• 7-zone support structure
• Softer zones at shoulders and hips — pressure relief
• Firmer lumbar zone — prevents excessive sinking
• Balanced zones — maintain overall stability

Technical specifications
• Barrel-shaped springs
• ~462 springs (90×200 cm)
• ~396 springs (80×200 cm)
• 14 × 33 / 12 × 33 layout (high-density)
• Dual-gauge steel (1.6 mm / 1.8 mm)

Construction & airflow
• Side-connected structure for stability
• Open design improves airflow and moisture control

Natural materials

Cover materials
• Cotton and wool blend
• GOTS-certified (supplier level)
• Naturally breathable and moisture-regulating

Latex core
• Natural Dunlop latex
• GOLS-certified (supplier level)
• Durable, elastic, and supportive

Additional natural layers
• Coconut fibre — used in hybrid models for added structure
• Horsehair — used in selected models for enhanced airflow and moisture control

Configurations de fermeté naturaliste

This mattress is currently configured as Soft.

Soft

Gentler pressure relief with deeper compression under load.

This setup allows the body to sink in more easily and creates a softer, more adaptive feel.

Learn more

Medium

A balanced feel created by placing the firmer latex layer on top and the softer layer underneath.

This setup provides more stable support with a subtle underlying softness.

Learn more

Société

Current configuration

Higher resistance with reduced compression.

This setup increases structural support and limits surface deformation.

Dual Comfort

Different firmness levels on each side of the mattress.

Each side operates independently within the same structure.

Learn more

More usable space, without compromise

Sleep, move, and use your bed freely — with support that stays consistent across the entire surface.

Sleep all the way to the edge

Sleep all the way to the edge

No need to avoid the sides. The mattress feels just as supportive at the edge as it does in the center.

More space when sharing the bed

More space when sharing the bed

Stable support helps reduce rolling toward the middle. Both sleepers can comfortably use their full side of the mattress.

Low profile that fits your space

Low profile that fits your space

The slimmer design takes up less visual and physical space. Ideal for smaller rooms, minimalist setups, or lower bed frames.

Materias & Certificates

Top layer: Firm latex (~85 kg/m³)

Function: structural support

Bottom layer: Firm latex (~85 kg/m³)

Function: base reinforsment

Manufacturing method: variable pinhole pattern

Zoning principle:
Smaller perforations → higher density → higher resistance
Larger perforations → lower density → lower resistance

Zone distribution:
Head / Neck → medium resistance
Shoulders → lower resistance
Upper back → medium resistance
Lumbar → higher resistance
Pelvic → controlled resistance
Knee → transition zone
Lower legs / feet → lower resistance

Zone transition: continuous (non-stepped)

Cover: cotton / wool
Certification: GOTS-certified (supplier level)

Latex: natural Dunlop latex
Certification: GOLS-certified (supplier level)

Coconut fibre: used in hybrid models

Horsehair: used in selected models

Natural temperature regulation

Des matériaux naturels respirants aident à maintenir une température de sommeil confortable tout au long de la nuit.

Heat doesn’t build up

Heat doesn’t build up

Air moves freely through the mattress instead of being trapped around your body, helping you maintain a more comfortable sleep temperature.

Moins d'humidité pendant la nuit

Moins d'humidité pendant la nuit

Les fibres naturelles absorbent et libèrent l'humidité, réduisant cette sensation de chaleur et d'humidité, et maintenant votre surface de sommeil plus équilibrée.

Always fresh and breathable

Always fresh and breathable

The internal structure allows continuous airflow, so the mattress stays light, airy, and comfortable throughout the night.

Modular delivery system

Livré dans des boîtes faciles à transporter et à installer.

Easier to transport

The Naturalist mattress is delivered in several manageable boxes instead of one large package, making transportation much easier.

Easier to carry upstairs

Smaller boxes are easier to carry through narrow staircases, elevators and hallways.

Assemblage simple

The mattress layers are assembled easily at home, creating the full mattress structure in just a few steps.

Assembly instructions are included with every mattress.

Compare Naturalist mattress models

Tous les matelas Naturalist sont fabriqués à partir de matériaux naturels certifiés. Ce tableau aide à comparer quel modèle convient à différents besoins de sommeil.

Naturalist Hybrid Naturalist Full Latex Naturalist High Profile Naturalist Horsehair
Meilleure position de sommeil All positions Side & back Back & stomach All positions
Pressure relief Excellent Superior Bon Excellent
Spinal support Excellent Good Superior Excellent
Temperature regulation Good Excellent Good Superior
Motion isolation Bon Excellent Good Excellent
Soutien sur les bords Superior Bon Excellent Excellent
Respirabilité Excellent Superior Good Superior
Natural materials 100% natural components 100% composants naturels 100% natural components 100% composants naturels
Durability 15+ ans 20+ years 15+ years 25+ years
Ideal sleeper weight All weights Light to medium All weights All weights

Sleep on it for 90 nights

Try your Naturalist mattress at home and take time to decide if it's right for you.

90-night sleep trial

90-night sleep trial

Dormez sur votre matelas Naturalist chez vous pendant jusqu'à 90 nuits et voyez comment il se sent au fil du temps.

Adjustable comfort

Adjustable comfort

The modular construction allows small comfort adjustments if the mattress feels too firm.

10-year warranty

10-year warranty

Les matelas Naturalist sont fabriqués à partir de matériaux naturels durables et sont couverts par une garantie de 10 ans.

Free EU delivery

Free EU delivery

Your mattress is delivered across the EU in modular boxes that are easier to transport and assemble.

Made close to nature

Naturalist mattresses are produced in a factory surrounded by forests and lakes using renewable energy and natural materials.

A mattress inspired by nature

Naturalist mattresses are created in a peaceful natural environment where forests, water and fresh air are part of everyday life. This connection to nature influences how we design our mattresses and the materials we choose.

Responsible production

Our factory uses renewable energy from rooftop solar panels, helping reduce environmental impact while producing durable natural sleep products.

Crafted with care

Each Naturalist mattress is assembled by experienced craftsmen and designed to provide long-lasting comfort using certified natural materials.

Designed for better sleep. Created with respect for nature.