Three layers of firm natural latex — designed for sleepers who need maximum structural support
The Altum Firm is built from three firm natural latex layers — the deepest structural construction in the full latex range. Designed for back and stomach sleepers who need firm support throughout the mattress, not just at the surface.
Natural latex retains its structural properties over time — sourced from GOLS certified suppliers, with a tested lifespan of 20+ years.
• Three firm natural latex layers — deepest structural support in the latex range
• Designed for back and stomach sleepers who need consistent firm support
• Minimal surface compression — body is kept elevated and supported
• Natural latex sourced from GOLS certified suppliers — structural properties maintained for 20+ years
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Designed for sleepers who need maximum support, better alignment, and a more stable sleep surface.
Provides maximum support to keep the spine properly aligned throughout the night. The three-layer firm construction helps prevent the lower back from sinking and reduces strain.
A stable, firm surface keeps the hips elevated and prevents excessive sinking, helping maintain a healthier spinal position.
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.
Creates a stable, structured surface without the “sinking” sensation - ideal for those who want maximum support and control.
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.
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.
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.
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.
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.
Create a calm and balanced sleep environment inspired by natural materials.
A three-layer firm latex construction designed to deliver maximum support, minimal compression, and long-lasting structural stability.
Breathable natural fabric that regulates temperature, manages moisture, and creates a clean, comfortable sleep surface.
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.
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 latex provides responsive pressure relief and adapts to the body's natural curves.
Breathable natural fibres help regulate temperature and manage moisture.
Natural materials allow air to circulate through the mattress and help reduce heat build-up during sleep.
Explore the materials and structure inside your mattress.
Ensures the latex is made from certified organic raw materials and meets strict environmental and social standards.
Covers organic cotton and wool, ensuring responsible production, safe processing, and traceability.
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.
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.
Zone structure scheme
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
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
This mattress is currently configured as 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.
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.
Higher resistance with reduced compression.
This setup increases structural support and limits surface deformation.
Different firmness levels on each side of the mattress.
Each side operates independently within the same structure.
Sleep, move, and use your bed freely — with support that stays consistent across the entire surface.
No need to avoid the sides. The mattress feels just as supportive at the edge as it does in the center.
Stable support helps reduce rolling toward the middle. Both sleepers can comfortably use their full side of the mattress.
The slimmer design takes up less visual and physical space. Ideal for smaller rooms, minimalist setups, or lower bed frames.
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
Breathable natural materials help maintain a comfortable sleep temperature throughout the night.
Air moves freely through the mattress instead of being trapped around your body, helping you maintain a more comfortable sleep temperature.
Natural fibres absorb and release moisture, reducing that warm, damp feeling and keeping your sleep surface more balanced.
The internal structure allows continuous airflow, so the mattress stays light, airy, and comfortable throughout the night.
Delivered in manageable boxes for easier transport and setup.
The Naturalist mattress is delivered in several manageable boxes instead of one large package, making transportation much easier.
Smaller boxes are easier to carry through narrow staircases, elevators and hallways.
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.
All Naturalist mattresses are made from certified natural materials. This table helps compare which model suits different sleep needs.
| Naturalist Hybrid | Naturalist Full Latex | Naturalist High Profile | Naturalist Horsehair | |
|---|---|---|---|---|
| Best sleeping position | All positions | Side & back | Back & stomach | All positions |
| Pressure relief | Excellent | Superior | Good | Excellent |
| Spinal support | Excellent | Good | Superior | Excellent |
| Temperature regulation | Good | Excellent | Good | Superior |
| Motion isolation | Good | Excellent | Good | Excellent |
| Edge support | Superior | Good | Excellent | Excellent |
| Breathability | Excellent | Superior | Good | Superior |
| Natural materials | 100% natural components | 100% natural components | 100% natural components | 100% natural components |
| Durability | 15+ years | 20+ years | 15+ years | 25+ years |
| Ideal sleeper weight | All weights | Light to medium | All weights | All weights |
Try your Naturalist mattress at home and take time to decide if it's right for you.
Sleep on your Naturalist mattress at home for up to 90 nights and see how it feels over time.
The modular construction allows small comfort adjustments if the mattress feels too firm.
Naturalist mattresses are built using durable natural materials and are covered by a 10-year warranty.
Your mattress is delivered across the EU in modular boxes that are easier to transport and assemble.
Designed for better sleep. Created with respect for nature.
