What Is Kloudcell? How Koala's Cooling Comfort Layer Works

Kloudcell® is Koala's proprietary comfort layer, made from durable, high-density polyurethane foam engineered with an open-cell structure. The open-cell design lets air move through the foam rather than trapping it like traditional closed-cell memory foam does, so body heat draws away from the sleep surface instead of building up. Below we cover what Kloudcell® is made from, how the open-cell mechanism actually cools, how it compares to other cooling technologies, and which Koala mattresses feature it.

Key Takeaways

• Kloudcell® is Koala's proprietary open-cell foam, engineered as a durable, high-density comfort layer that combines memory foam contouring with enhanced airflow

• The open-cell structure is the core cooling mechanism: air moves through the foam rather than being trapped like it is in closed-cell memory foam

• Kloudcell® is used across all 5 Koala mattress models in three variants: standard Kloudcell® (SE, Koala Mattress), Cooling Gel Kloudcell® (Plus, Polar+), and Copper Kloudcell® (Luxe)

• Kloudcell® is part of Australia's most awarded mattress range, designed to give you the closest feeling to floating on a cloud

• The full comfort payoff comes from combining Kloudcell® with contouring: you get memory foam's pressure relief without the heat retention traditional dense memory foam is known for

What Kloudcell Is Made From

Kloudcell® is made from durable, high-density polyurethane foam engineered with an open-cell structure that lets air flow through the material rather than trap in it. It's CertiPUR-US® certified, which confirms the foam is manufactured without formaldehyde, ozone depleters, regulated phthalates, mercury, lead, or other heavy metals, and that it meets low-VOC emission standards for indoor air quality.

Key material properties of Kloudcell®:

• Base material: durable, high-density polyurethane foam (per Koala's product-page marketing)

• Structure: open-cell, so air moves through the foam rather than being trapped

• CertiPUR-US® certified: manufactured to strict foam-safety and emissions standards

• Antimicrobial additive in all Koala foam layers, including Kloudcell®

• Zero Disturbance® technology: absorbs partner movement so you sleep undisturbed

Three variants of Kloudcell® across the Koala range:

• Standard Kloudcell®: used in the Koala SE Mattress and Koala Mattress

• Cooling Gel Kloudcell®: cooling gel infused into the open-cell foam; used in the Koala Plus Mattress and Koala Polar+

• Copper Kloudcell®: copper particles infused into the foam; used in the Koala Luxe Mattress

How Kloudcell Keeps You Cool

Kloudcell® keeps you cool primarily through its open-cell foam structure, which allows air to flow through the foam rather than trap in it like traditional closed-cell memory foam. Air movement carries body heat away from the sleep surface, so you don't build up the "sleeping in a hot bath" feeling common with dense memory foam. The Cooling Gel and Copper variants add active heat-absorption to that base airflow mechanism.

The core cooling mechanism (all Kloudcell® variants):

• Open-cell foam structure: individual foam cells are open (not sealed), so air moves through the material as you compress and shift on it

• Air-driven heat transfer: as your body compresses the foam, air flows out; as you shift position, fresh air flows in. This constant air movement carries body heat away from the sleep surface

• No thermal barrier: closed-cell memory foam traps a warm-air layer against your body; open-cell Kloudcell® doesn't build that barrier

• Contour + cool: Kloudcell® still contours to your body for pressure relief; the cooling is additional, not a trade-off against pressure relief

The two Kloudcell® cooling upgrades layer additional mechanisms on top of the base airflow:

• Cooling Gel Kloudcell® (Koala Plus, Polar+): gel infused into the open-cell foam adds active heat absorption for the first 2 to 3 hours of sleep. After thermal equilibrium with body temperature, the underlying open-cell airflow keeps working

• Copper Kloudcell® (Koala Luxe): copper particles in the foam use copper's high thermal conductivity (one of the highest of all metals) to draw heat away from the body more actively. Copper also contributes antimicrobial properties

Kloudcell vs Other Cooling Mattress Technologies

Cooling mattress technologies fall into three broad categories: foam structure (open-cell vs closed-cell), foam additives (gel, copper, phase-change material), and fabric or fibre technology (cool-touch weaves, heat-release strips). Kloudcell® combines the foam-structure category with additive variants, while other technologies in the Koala range address the fabric and heat-release categories. Here's how they compare in one table.

The Koala advantage in this comparison is the open-cell foam base. Standard industry cooling foams typically add gel or copper to closed-cell memory foam, which delivers initial cooling but reverts to traditional heat retention once the additive reaches thermal equilibrium. Kloudcell®'s open-cell base keeps airflow working across the full night, so additives compound with airflow rather than replace it.

Which Koala Mattresses Have Kloudcell

All five Koala mattresses feature Kloudcell® comfort in different amounts and variants: 5 cm in the Koala SE, 7 cm in the Koala Mattress, 8 cm in both the Koala Plus and Koala Polar+, and 9 cm in the Koala Luxe. The amount of Kloudcell® scales up 40% at each tier, and the variant upgrades from standard through Cooling Gel to Copper.

The Kloudcell® ladder across the Koala range:

• Koala SE Mattress: 5 cm standard Kloudcell® (base amount)
  

• Koala Mattress: 7 cm standard Kloudcell® (40% more than SE)
  

• Koala Plus Mattress: 8 cm Cooling Gel Kloudcell® (60% more than SE), the first cooling-gel variant
  

• Koala Polar+: 8 cm Cooling Gel Kloudcell® (60% more than SE), same as Plus plus PolarBands® for hot sleepers
  

• Koala Luxe Mattress: 9 cm Copper Kloudcell® (80% more than SE), our premium variant with Phase Change Material topper

Our Koala Snoozytime Mattress (our kids' single-bed mattress) also uses Kloudcell® comfort; see the Snoozytime product page for its specific spec sheet.

Is Kloudcell Worth It?

Kloudcell® is worth it if you want memory foam-style contouring and pressure relief without the heat retention that traditional closed-cell memory foam is known for. It's particularly worth it for hot sleepers, Australian summers, and buyers who've previously slept hot on memory foam and moved on to firmer or spring mattresses to compensate.

The value proposition:

• Cooler sleep than closed-cell memory foam: airflow through the foam vs trapped heat

• Same contouring benefits: pressure relief at hips and shoulders comparable to memory foam

• Durable: high-density construction retains support long-term; part of our range's 10-year warranty

• Adjustable across the range: from entry (SE) to premium (Luxe) Kloudcell® variants at different price points

• Backed by 120-night trial: try Kloudcell® in your own home and return if it doesn't suit

• Part of Australia's most awarded mattress range: the wider Koala mattress line-up has 50,000+ five-star reviews

When Kloudcell® might not be worth it for you:

• You prefer traditional coil-spring mattresses with the firmness and bounce that pocket springs deliver

• You don't sleep hot on standard memory foam and don't need the cooling benefit

• Your budget sits below the Koala SE price point; Kloudcell® is a premium-mattress technology

If you're a genuinely hot sleeper, look at the Cooling Gel Kloudcell® variants (Plus and Polar+) or the Copper Kloudcell® in the Luxe. If you're a moderate sleeper, standard Kloudcell® in the SE or Koala Mattress delivers the open-cell airflow benefit at a lower entry price.

Explore Our Kloudcell® Mattress Range

Our full Koala mattress range features Kloudcell®, with three variants (standard, Cooling Gel, and Copper) scaling across price and cooling technology tiers. All models feature CertiPUR-US® certified foam, Zero Disturbance® technology, antimicrobial foam layers, our 120-night trial, and 10-year warranty. Explore the range:

• Koala Mattress: flippable Firm/Medium-Firm, 25 cm total with 7 cm standard Kloudcell® (40% more than SE), zip-off topper with carbon-zero TENCEL™ Lyocell ticking, 3-zone charcoal marble dyed support.

• Koala Plus Mattress: flippable Medium-Firm/Medium, 28 cm total with 8 cm Cooling Gel Kloudcell® (60% more), reversible summer/winter topper (CoolThread™ / Organic Cotton), 5-zone with bamboo charcoal edge support.

• Koala Luxe Mattress: Plush non-flippable, 31 cm total with 9 cm Copper Kloudcell® (80% more), 3 cm zip-off quilted topper with Australian Cashmere blend and Phase Change Material, 7 targeted high-density support zones.

• Koala SE Mattress: Medium non-flippable, 23 cm total with 5 cm standard Kloudcell® and TENCEL™ Lyocell breathable cover. Our entry option.

• Koala Snoozytime Mattress: our Kloudcell®-based kids' mattress option for children in a single-size bed.

Browse our full premium mattress range to compare all Kloudcell® variants side-by-side.