Demko™ Organic Mattress – ProLuxe B – Dual Firmness

Dual-Sided Firm Support Perfect for adults who prefer a firm sleeping surface, this mattress offers solid support with different firmness levels. Flip it over to choose the side that best suits your comfort needs.

Firmness: 7.0 / 10 and 8.0 / 10

Layer composition: 6 cm organic latex + 5 cm organic coir fibre + 3 cm organic coir fibre + 4 cm organic latex

Total Thickness: 19.5 cm / 7.7″ (including 1.5 cm cover)

Weight Support: Up to 130 kg (20.5 stones) per person, per side

No Adhesives. 100% Organic. Fully Customizable.

We never use adhesives to bond the layers of our mattresses—preserving their purity and ensuring they remain truly organic. This thoughtful design also allows you to rearrange the layers to customize firmness levels, tailoring comfort to your unique preferences within a single mattress.

Layer composition:

  • Top layer: 6 cm organic latex
  • 2nd layer: 5 cm organic coir fibre
  • 3rd layer: 3 cm organic coir fibre
  • Bottom layer: 4 cm organic latex

Firmness options:

  • 7.0 / 10   
  • 8.0 / 10

1st rearranged option

  • Top layer: 4 cm organic latex
  • 2nd layer: 3 cm organic coir fibre
  • 3rd layer: 6 cm organic latex 
  • Bottom layer: 5 cm organic coir fibre

Firmness option:

  • 6.5 / 10

2nd rearranged option

  • Top layer: 6 cm organic latex
  • 1st layer: 3 cm organic coir fibre
  • 2nd layer: 4 cm organic latex
  • Bottom layer: 5 cm organic coir fibre

Firmness option:

  • 6.0 / 10

3rd rearranged option

  • Top layer: 4 cm organic latex
  • 1st layer: 6 cm organic latex
  • 2nd layer: 5 cm organic coir fibre
  • Bottom layer: 3 cm organic coir fibre

Firmness option:

  • 5.5 / 10

GOTS-Certified Organic Mattress Cover

Experience the natural luxury of our certified organic mattress cover, thoughtfully crafted to elevate comfort, purity, and performance.

  • Organic Merino Wool: Soft, silky, and GOTS-certified, this premium wool layer offers exceptional breathability and comfort. Naturally hypoallergenic and dust mite resistant, it is also a powerful thermoregulator—keeping you cool in summer and warm in winter. Durable, sustainable, wool supports deep, uninterrupted rest. 

  • Organic Cotton: Also GOTS-certified, our organic cotton adds a smooth, breathable surface that completes the cover with elegance and durability.

Together, these materials create a clean, chemical-free sleep environment that supports your well-being and reflects our commitment to sustainability. It’s the perfect complement to your organic mattress—gentle on your skin, kind to the planet, and built to last. Wool and cotton are biodegradable, renewable, and eco-friendly — this mattress cover is a responsible choice for conscious consumers.

 

Vegan Mattress Cover with Actipro™ Probiotic Protection

Our mattress features a dual-layer cover system designed for purity, performance, and long-lasting freshness.

  • Inner Cotton Layer: A soft, breathable cotton cover protects the mattress core, ensuring structural integrity and comfort.

  • Outer Tencel™ Cover: Made from responsibly sourced wood pulp, Tencel™ is a natural fiber known for its strength, silky softness, and exceptional moisture management. The knitted surface enhances airflow, helping your mattress stay cool and fresh night after night.

Actipro™ Technology: Natural Defense for a Healthier Sleep

Infused into the Tencel™ fabric, Actipro™ is a probiotic-based treatment that provides safe, effective protection against allergens, dust mites, and odors—without compromising beneficial microflora.

  • Uses active probiotics to naturally inhibit harmful bacteria and allergens

  • Applied using natural clay technology for long-lasting performance

  • A gentle, non-toxic solution ideal for sensitive skin and wellness-focused households

This advanced cover system combines nature’s finest fibers with innovative probiotic science—delivering a cleaner, cooler, and more healthful sleep environment.

Important information

All our organic mattresses are GOLS and GOTS certified.

Organic mattresses need to be used on an appropriate, strong, supportive slat base which is able to hold the mattress’ and its users’ weight without becoming hollow. Gaps should be around 2 inches wide. Gaps are needed to help the mattress ‘breath’. This applies to all types of organic mattresses.

All our mattresses comply with BS7177 and BS5852, low hazard domestic use and medium hazard hotel use.

Care instructions for our mattresses

Our mattresses are two sided and you can use both sides. The side with the big product sticker attached to the cover is normally the top.

Take extreme care whilst moving the mattress as the latex can tear if grabbed or pulled on corners or edges.

Rotate the mattress from top to bottom and flip it over once every 3 months in the first 2 years. Then once a year, which will ensure even wear and tear and will prolong its lifespan.

You can air the mattress every time you change your bed linen to keep it fresh and dry.

Never use detergents or chemical cleaners on your mattress. This can adversely affect not only the fabrics but also the fillings inside.

The mattress must be kept dry. If there is a risk of accidents with fluids, please use a waterproof mattress protector.

If you spill something on your mattress and it gets wet, wipe the liquid with a cloth, remove the cover and air the mattress core till it is dry. 

Our covers are zip-off removable and washable by hand wash at 20 maximum at 30 degrees. Do not wash the cover at a higher temperature as it may shrink. Do not tumble dry and do not dry clean it.

The mattress can not be used on boarded, closed or not adequately ventilated bed bases or on the floor as the lack of ventilation may lead to mould and mildew build up and invalidates your guarantee. We recommend slatted bases. The gaps between the slats should be between 2 and 4 inches wide.

The mattress is designed for sleeping on and constant sitting on the edge can cause damage and place undue stress on this area of the mattress.

Please keep packaging away from children. 

We are rated excellent by our customers.

Sarah J LiaoDemko mattress saves my nights!

Verified buyer

I had been looking for a firm but not too hard and non-toxic, made by natural materials mattress for ages! As I think most of the people spend 1/3 their time on the bed, the comfort of the mattress is the most important, related to your sleep quality, even your health! Since lying on the demko latex+coir mattress, my hunting journey's finally end! It's so comfortable to sleep on, support your body your spine well, my sleeping had a great improvement! The quality is very good, and the price is reasonable comparing the other brands. The consultant of Demko is very professional, he gave me some advice for choosing the right firmness mattress, and arranged fast delivery to me, as I am expecting a new baby soon and wanted to get everything organised before the new arrival. Demko, thank you so much! Will definitely recommend to people who would like to buy a good mattress.
Manish GajriaDemko ProLuxe B dual firmness

Verified buyer

We recently bought a demko mattress [Proluxe B dual firmness] The mattress is exactly what we needed - firm, supporting and cool. The fact that there aren't any springs mean that one partner moving at night does not disturb the other sleeper. My interactions with Tamas, the sales director, were very positive. Delivery was done as promised and my old mattress was taken away for a small fee. Highly recommend this company
Mr Richard WalterWe have been using our firm mattress…

Verified buyer

We have been using our firm mattress from Demko for 4 weeks now and I can confirm this is the greatest mattress we have ever had. Both in quality and comfort it exceeds all our previous mattresses. My back pain is almost completely gone only after couple of weeks sleeping on the mattress. Could not be happier with our choice and I can only recommend it. Delivery was also executed in a very professional way and Demko's sales rep Jennifer was really helpful answering all our questions prior purchasing it. Thank you Demko!
Ian StewartReturn customer.

Verified buyer

Return customer purchasing two more mattresses from Demko. First order was flawless. The mattress was delivered well within the timeframe quoted by Demko, with an accurate time slot given on the delivery day. Couldn't be happier with the product itself, switching to a firmer mattress with no metal has equated to a great nights sleep. Recommended.
Rosa PhillipsI am extremely happy with all the …

Verified buyer

I am extremely happy with all the aspects from enquiry through to the delivery of the mattress. The mattress is exactly what I needed for my chronic bad pain. Now I have better sleep and wakes up every morning without pain and without being stiff. I actually recommended the company to a few friends. Unfortunately they could not afford to purchase one. They would have if the price was agreeable with them.
Winifred McLaughlinExcellent quality of product and purchase experience

Verified buyer

Super purchasing experience! The website itself is very very informative. Once i had made my selection the customer service by Tamas was absolutely wonderful, helpful and efficient both during and after purchasing The product itself i am extremely pleased with Everything about this experience was faultless including delivery! More than happy!!!!!!
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