The Altum Medium Firm is designed for combination sleepers who want the balance of the Aura range but with a deeper comfort profile. At 23.5 cm high, its three natural latex layers create a more cushioned feel while the firmer top layer maintains structured support.
Like all Aura and Altum configurations, the layers are reversible — the firmer layer on top creates a medium feel; rearrange them for a softer configuration.
• 23.5 cm profile for enhanced comfort and support • Three latex layers — deeper profile than the Aura Medium Firm • Designed for combination sleepers who want cushioning with structure • Firmer top layer helps maintain spinal support across sleeping positions • Reversible — reconfigure between Medium Firm and Soft at home
Preço normal
€900,00 EUR
Preço normal
€1.059,00 EUR
Preço de saldo
€900,00 EUR
Preço unitário/ por
Em promoção
Esgotado
Imposto incluído.
Envio calculado na finalização da compra.
✔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 medium latex mattress right for your sleep style and body type?
Designed for sleepers who want balanced comfort with deeper cushioning and stable support across different sleeping positions.
Combination sleepers
Adapts easily as you change positions during the night, maintaining comfort and support whether you sleep on your side, back, or a mix of both.
Back sleepers
Provides stable support to help keep the spine aligned, while the additional latex layer adds gentle cushioning for a more relaxed feel.
Medium weight sleepers
Balanced firmness prevents excessive sinking while the deeper latex construction adapts smoothly to the body’s natural curves.
Sleepers who prefer a balanced feel
A perfect middle ground between soft comfort and firm support - with a slightly deeper, more cushioned feel than a standard medium mattress.
If your mattress lacks balance, your sleep can suffer
The Full Latex Plus construction adapts to your body with a deeper, more responsive comfort profile - helping reduce pressure, improve alignment, and support uninterrupted sleep.
Poor spinal alignment
Without the right balance of support and comfort, the spine can fall out of alignment during sleep. A multi-layer latex structure distributes weight more evenly, helping maintain a natural, healthy posture.
Pressure without proper support
Too much firmness can create pressure points, while too little support can cause sinking. A balanced latex construction relieves pressure while still supporting the body evenly.
Restless sleep
Constant tossing and turning can be a sign of discomfort. A deeper, more adaptive surface reduces micro-adjustments, helping your body settle into more stable, uninterrupted sleep.
Overheating
Natural latex is breathable and does not trap heat like synthetic foams. Its open-cell structure allows airflow, helping maintain a comfortable sleep temperature throughout the night.
Sleep closer to nature
Create a calm and balanced sleep environment inspired by natural materials.
Inside the Naturalist Full Latex Plus Medium Mattress
Firm support on top, with deeper cushioning working from underneath.
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 firmer latex layer placed on top to provide immediate support and maintain proper spinal alignment across the body.
3
Additional soft natural latex layer
A softer latex layer beneath adds deeper cushioning, allowing the body to relax while preventing pressure build-up.
4
Soft natural latex base layer
A second soft latex layer works from below to enhance comfort depth, creating a more balanced and adaptive feel without losing support.
Natural materials that support healthier sleep
The Naturalist 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
Ensures the latex is made from certified organic raw materials and meets strict environmental and social standards.
GOTS certified textiles
Covers organic cotton and wool, ensuring responsible production, safe processing, and traceability.
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.
7-zone latex
Zone structure scheme
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
Additional natural layers • Coconut fibre — used in hybrid models for added structure • Horsehair — used in selected models for enhanced airflow and moisture control
Naturalist firmness configurations
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.
Breathable natural materials help maintain a comfortable sleep temperature throughout the night.
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.
Less humidity during the night
Natural fibres absorb and release moisture, reducing that warm, damp feeling and keeping your sleep surface more balanced.
Always fresh and breathable
The internal structure allows continuous airflow, so the mattress stays light, airy, and comfortable throughout the night.
Modular delivery system
Delivered in manageable boxes for easier transport and setup.
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.
Simple assembly
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
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 Full Latex Plus
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
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
Sleep on your Naturalist mattress at home for up to 90 nights and see how it feels over time.
Adjustable comfort
The modular construction allows small comfort adjustments if the mattress feels too firm.
10-year warranty
Naturalist mattresses are built using durable natural materials and are covered by a 10-year warranty.
Free EU delivery
Your mattress is delivered across the EU in modular boxes that are easier to transport and assemble.
Customers are saying
5.00 ★ (6)
Verified
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.
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