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KAS Kopenhagen Premium Baby Mattress – Ultimate Comfort for the Kai BabyCot

Give your baby the very best start in life with the KAS Kopenhagen Premium Baby Mattress, designed exclusively to fit the Kai BabyCot. This mattress offers a unique combination of superior comfort, safe materials, and advanced sustainability – developed to support healthy sleep from the very beginning.

Kas Kopenhagen
Discover Kas Kopenhagen at Akomo Kids — a Danish design brand where timeless Scandinavian aesthetics meet honest craftsmanship and sustainable materials. Every piece brings calm, balance, and quiet elegance into the nursery, and families across the Netherlands, Germany and Belgium choose Kas Kopenhagen for its lasting quality and understated beauty.
New — The Kai Smoked Oak Collection
The Kai Collection is Kas Kopenhagen’s most iconic series, and it now arrives in a rich new finish: Smoked Oak. This deeper, warmer tone brings extra character and depth to the nursery, while keeping the collection’s signature calm, minimalist silhouette intact.
What’s Included
The Kai Smoked Oak set includes a cot bed, a chest of drawers and a wardrobe:

The chest of drawers features two cupboards, three generous drawers, and a removable changing top that adapts as your child grows.
The wardrobe offers multiple shelves, a hanging rail, tapered legs, and hidden screws for a clean, seamless finish.

Together, the pieces create a cohesive, sophisticated nursery in a tone that works beautifully in both light and darker interiors.
Shop It as a Bundle
At Akomo Kids, you can shop the Kai Smoked Oak collection as part of an exclusive bundle at a discounted price, and most items ship directly from stock for fast delivery across Europe.
The Eli Collection — Grows With Your Child
For a room that grows with your child, the Eli Collection combines flexibility and Scandinavian warmth. Crafted from solid oak, the toddler bed extends into a full single bed (90 × 200 cm) and can be converted into a daybed or a combi-bed by adding or removing side panels — a design that adapts from nursery to big-kid room.
Complete the Room — Accessories & Details
Kas Kopenhagen also offers a range of matching accessories that add both style and function:
Changing Accessories
Changing cushions and mats designed to fit the Kai wall-mounted changing unit.
Shelving
Solid oak shelving with hidden mounting — ideal for books, toys or decor.
Textiles
100% organic cotton fitted sheets with premium YKK zips.
Sustainable Craftsmanship
Kas Kopenhagen works exclusively with FSC-certified oak, safe finishes, and a quiet aesthetic built for modern family homes — whether you’re furnishing a new-build in the Netherlands, a family home in Germany, or a minimalist apartment in Belgium.
Experience It in Our Showroom
Visit the Akomo Kids showroom in Zwaag to see the full Kas Kopenhagen collection — including the new Kai Smoked Oak finish — in person. Feel the materials, compare finishes, and get personal styling advice tailored to your interior.
Free Delivery & Assembly
After your purchase, we take care of everything: free delivery and professional assembly across the Netherlands. Our team places, adjusts and finishes every piece so it’s ready to use from day one — and we take the packaging materials with us for recycling.
Why Shop Kas Kopenhagen at Akomo Kids

Personal advice in our showroom
New: Kai Smoked Oak collection
Exclusive bundle discounts on Kas Kopenhagen sets
Fast delivery across Europe
Free delivery & professional assembly in the Netherlands (if bought without discount)

Discover the timeless elegance of Kas Kopenhagen — where Scandinavian design, sustainability and craftsmanship come together. Now at Akomo Kids: the new Kai Smoked Oak collection, with option for free delivery and free assembly.

Kas Kopenhagen – Baby Mattress Extender for Kai Baby Cot – Premium

The KAS Kopenhagen Premium Mattress features a unique 2-layered design, offering tailored support for both babies and toddlers. Unlike the regular version, it’s made from PureBio foam with a TENCEL® cover, providing enhanced comfort, breathability, and up to 74% lower CO₂ emissions – the perfect eco-upgrade for growing children.

€ 120,00

3 in stock (can be backordered)

In stock*
  • Rated 9.2 ★★★★★
  • Pay later with Klarna
  • Showroom in Zwaag, NH
  • More than 20.000 customers have already ordered with us

KAS Kopenhagen Premium Baby Mattress – Ultimate Comfort for the Kai BabyCot

Give your baby the very best start in life with the KAS Kopenhagen Premium Baby Mattress, designed exclusively to fit the Kai BabyCot. This mattress offers a unique combination of superior comfort, safe materials, and advanced sustainability – developed to support healthy sleep from the very beginning.

PureBio Foam – Sustainable Innovation for Your Baby’s Sleep

At the heart of the Premium Baby Mattress lies KAS Kopenhagen’s revolutionary PureBio foam. This next-generation foam is created using organic waste instead of fossil resources, following a certified 100% Biomass Balance approach. The result? A high-resilience, breathable material that adapts gently to your baby’s body, offering optimal support throughout every sleep stage.

Unlike conventional PU foam, PureBio foam reduces CO₂ emissions by up to 74% – making this mattress an eco-conscious choice for modern families who care about their child’s comfort and the planet’s future.

Perfect Airflow and Long-Lasting Comfort

The mattress’s structure encourages effective air circulation to prevent overheating and moisture build-up. This keeps your baby comfortable all night long – whether it’s summer or winter. And with a generous 5-year sagging guarantee, the Premium Baby Mattress maintains its shape and supportive qualities far beyond infancy.

Luxuriously Soft TENCEL® Cover – Breathable and Antibacterial

The mattress is wrapped in a premium, removable cover made from **TENCEL®** – a silky-smooth, FSC-certified fabric derived from wood pulp. TENCEL® is naturally antibacterial, moisture-regulating, and breathable, helping to create a clean and hygienic sleep environment for your baby.

The cover is machine washable at 40 °C, ensuring easy maintenance and lasting freshness – no harsh chemicals, no synthetic fibers, just pure softness against your baby’s skin.

Made to Fit the KAS Kopenhagen Kai BabyCot

Designed to fit seamlessly inside the Kai BabyCot, this premium mattress delivers both form and function. It provides the perfect balance of firmness and cushioning – essential for safe baby sleep – while complementing the Kai cot’s minimalistic, Scandinavian aesthetic.

Why Choose the KAS Kopenhagen Premium Baby Mattress?

  • Specially made for the Kai BabyCot by KAS Kopenhagen
  • High-resilience PureBio foam for ergonomic support
  • Up to 74% less CO₂ emissions compared to PU foam
  • Removable TENCEL® cover – breathable, antibacterial, washable
  • Ventilated design for optimal airflow and moisture control
  • 5-year sagging warranty for long-term quality
  • Non-toxic, chemical-free materials – safe for newborns

Invest in sleep that’s as gentle on your baby as it is on the planet.

Attributes Value
Age

Junior (3-6), Toddler (1-3)
Certificate

FSC
Color

White
Material

TENCEL®
Wash

40 °C

KAS Kopenhagen Premium Baby Mattress – Ultimate Comfort for the Kai BabyCot

Give your baby the very best start in life with the KAS Kopenhagen Premium Baby Mattress, designed exclusively to fit the Kai BabyCot. This mattress offers a unique combination of superior comfort, safe materials, and advanced sustainability – developed to support healthy sleep from the very beginning.

Kas Kopenhagen
Discover Kas Kopenhagen at Akomo Kids — a Danish design brand where timeless Scandinavian aesthetics meet honest craftsmanship and sustainable materials. Every piece brings calm, balance, and quiet elegance into the nursery, and families across the Netherlands, Germany and Belgium choose Kas Kopenhagen for its lasting quality and understated beauty.
New — The Kai Smoked Oak Collection
The Kai Collection is Kas Kopenhagen’s most iconic series, and it now arrives in a rich new finish: Smoked Oak. This deeper, warmer tone brings extra character and depth to the nursery, while keeping the collection’s signature calm, minimalist silhouette intact.
What’s Included
The Kai Smoked Oak set includes a cot bed, a chest of drawers and a wardrobe:

The chest of drawers features two cupboards, three generous drawers, and a removable changing top that adapts as your child grows.
The wardrobe offers multiple shelves, a hanging rail, tapered legs, and hidden screws for a clean, seamless finish.

Together, the pieces create a cohesive, sophisticated nursery in a tone that works beautifully in both light and darker interiors.
Shop It as a Bundle
At Akomo Kids, you can shop the Kai Smoked Oak collection as part of an exclusive bundle at a discounted price, and most items ship directly from stock for fast delivery across Europe.
The Eli Collection — Grows With Your Child
For a room that grows with your child, the Eli Collection combines flexibility and Scandinavian warmth. Crafted from solid oak, the toddler bed extends into a full single bed (90 × 200 cm) and can be converted into a daybed or a combi-bed by adding or removing side panels — a design that adapts from nursery to big-kid room.
Complete the Room — Accessories & Details
Kas Kopenhagen also offers a range of matching accessories that add both style and function:
Changing Accessories
Changing cushions and mats designed to fit the Kai wall-mounted changing unit.
Shelving
Solid oak shelving with hidden mounting — ideal for books, toys or decor.
Textiles
100% organic cotton fitted sheets with premium YKK zips.
Sustainable Craftsmanship
Kas Kopenhagen works exclusively with FSC-certified oak, safe finishes, and a quiet aesthetic built for modern family homes — whether you’re furnishing a new-build in the Netherlands, a family home in Germany, or a minimalist apartment in Belgium.
Experience It in Our Showroom
Visit the Akomo Kids showroom in Zwaag to see the full Kas Kopenhagen collection — including the new Kai Smoked Oak finish — in person. Feel the materials, compare finishes, and get personal styling advice tailored to your interior.
Free Delivery & Assembly
After your purchase, we take care of everything: free delivery and professional assembly across the Netherlands. Our team places, adjusts and finishes every piece so it’s ready to use from day one — and we take the packaging materials with us for recycling.
Why Shop Kas Kopenhagen at Akomo Kids

Personal advice in our showroom
New: Kai Smoked Oak collection
Exclusive bundle discounts on Kas Kopenhagen sets
Fast delivery across Europe
Free delivery & professional assembly in the Netherlands (if bought without discount)

Discover the timeless elegance of Kas Kopenhagen — where Scandinavian design, sustainability and craftsmanship come together. Now at Akomo Kids: the new Kai Smoked Oak collection, with option for free delivery and free assembly.

View all products

Kas Kopenhagen – Baby Mattress Extender for Kai Baby Cot – Premium

€ 120,00
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