Demko™ Organic Mattress – ProLuxe A Junior – Dual Firmness

Firm Support for Growing Bodies Ideal for young children, this mattress provides firm support to aid healthy bone development. It’s also a great choice for lighter-weight adults who prefer a firmer sleeping surface.

Firmness: 8.0 / 10 

Layer composition: 3.5 cm organic latex + 5 cm organic coir fibre + 3 cm organic coir fibre + 3.5 cm organic latex

Total Thickness: 16.5 cm / 6.5″ (including 1.5 cm cover)

Weight support: Up to 90 kg (14 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: 3.5 cm organic latex
  • 1st layer: 5 cm organic coir fibre
  • 2nd layer: 3 cm organic coir fibre
  • Bottom layer: 3.5 cm organic latex

Firmness option:

  • 8.0 / 10 

1st rearranged option:

  • Top layer: 3.5 cm organic latex
  • 2nd layer: 5 cm organic coir fibre 
  • 3rd layer: 3.5 cm organic latex
  • Bottom layer: 3 cm organic coir fibre

Firmness option:

  • 7.5 / 10

2nd rearranged option:

  • Top layer: 3.5 cm organic latex
  • 2nd layer: 3 cm organic coir fibre 
  • 3rd layer: 3.5 cm organic latex
  • Bottom layer: 5 cm organic coir fibre

Firmness option:

  • 7.0 / 10

3rd rearranged option:

  • Top layer: 3.5 cm organic latex
  • 2nd layer: 3.5 cm organic latex 
  • 3rd layer:3 cm organic coir fibre
  • Bottom layer: 5 cm organic coir fibre

Firmness option:

  • 6.5 / 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.

Mrs J GarnettFirm, supportive and comfortable

Verified buyer

I bought the mattress for my daughter and after her first night she looked far more rested in the morning. When I laid on the mattress, I felt as if my spine was being gently adjusted, and my partner felt the same. The mattress felt firm and supportive but not hard at the same time. My daughter is really enjoying her mattress and can sit comfortably to watch TV and play video games on her bed too. My daughter has much less back pain and no neck pain now too. She finds it supportive and very comfortable.
Gerard NathGreat product and company

Verified buyer

We ordered 2 single mattresses which were delivered in a week. The quality of the mattresses is excellent. Doing business with Demko was also great, with almost immediate support via email. Adjusting the mattresses was easy. We were able to adjust the firmness/softness of the mattress just by swapping the latex layers around. Highly recommended Demko to anyone.
Kyla BiggendenAbsolutely fantastic

Verified buyer

Absolutely fantastic service and communication from start to finish. Really helpful and friendly. The mattress is perfect and I can't state how happy I am to have a safe chemical and metal free bed for my family and I to sleep on! Thank you so much. I would recommend Demko to anyone and everyone.
Mr Constantine ManosSuper comfy mattress and great service!

Verified buyer

We have had a Demko mattress for a couple of weeks now and find it incredibly comfortable. The build quality is very good and excellent customer service. Tamas was extremely helpful and responsive and the turnaround time from ordering to receiving was very quick. Overall a very pleasant experience and would highly recommend Demko. Top marks!!!
Julian DaviesThis is my second mattress from Demko

Verified buyer

This is my second mattress from Demko. The service is great and mattresses are amazing in every way. I chose Demko as the mattresses are totally non toxic and metal free and high quality and long lasting. After extensive research nothing comes close.
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