Koala Plus Mattress Reviews (2026)

What stood out most in our testing was how easy it was to fine-tune the feel without replacing the mattress. The medium-firm side worked better for side sleeping, the firmer side felt steadier through the hips and low back, and motion stayed nicely contained. The main trade-off is convenience: if you dislike unzipping layers or want a sturdier perimeter, you may be happier with something from our guide to the best mattresses with edge support.

• Who It’s For

  • Hot sleepers who want a cooler-feeling foam surface

  • Combination sleepers who like switching between medium-firm and firm

  • Couples who care more about motion control than bounce

• Who It’s Not For

  • People who want a simple one-piece setup

  • Sleepers who rely on a very firm edge for sitting

  • Lightweight side sleepers who prefer a softer cradle

We ran the mattress through our standard hands-on mattress testing process rather than judging it from specs alone. I slept on the Koala Plus across back and side positions, then repeated nights after flipping the comfort layer to compare support, pressure relief, and overall feel. Marcus Reed focused on cooling and midsection stability during back and stomach sleep. Jenna Brooks and Ethan Cole used it in shared-bed sessions to track motion isolation and edge support. We also noted responsiveness during turns and how the feel changed after repeated firmness adjustments.

The first thing that came through in daily use was how configurable the bed feels. I started with the cooler side of the topper and the medium-firm face up, then flipped it after several nights to see how my lower back responded. The firmer setup did a better job controlling hip dip, but for side sleeping I kept coming back to the medium-firm side because it gave my shoulder more room. That balance mattered more than I expected, especially on mornings when I was paying closer attention to low-back tightness, the same kind of issue that shows up in our coverage of the best mattresses for back pain.

Marcus usually notices heat build-up quickly on foam beds, and this one stayed calmer than expected through warmer nights. Jenna and Ethan cared most about partner movement, and the mattress did a good job keeping that motion from spreading across the whole surface, which lines up with what we look for in the best motion isolation mattresses. It still didn’t feel springy, but it was easier to move on than the slower materials discussed in our guide to memory foam mattress pros and cons.

• What we liked

  • Cooler surface feel that held up well late into the night

  • The firmness flip noticeably changes how the bed supports your hips

  • Partner movement stays fairly contained

• Who it is best for

  • Hot sleepers who still want a foam build

  • Back and combination sleepers deciding between medium-firm and firm

  • Couples who wake easily from motion transfer

• Where it falls short

  • Edge sitting compresses more than many hybrids

  • Zippered layer changes add a little setup friction

  • The firm side can feel too pushy at the shoulder

• Mattress type: foam build with Kloudcell® comfort layers and a support core. For a broader breakdown of construction types, see mattress materials.

• Height: 28 cm (about 11").

• Firmness: flippable comfort layer with medium-firm and firm options. For more context, see mattress firmness by sleep position.

• Support design: five targeted support zones. Our explainer on zoned support systems covers what that usually changes in real use.

• Cooling: CoolThread™ plus Cooling Gel Kloudcell®; Koala says the mattress sleeps 13% cooler than leading online brands. That fits the broader ideas in our guide to mattress breathability and temperature control.

• Seasonal topper: 2 cm quilted topper with Organic Cotton on one side and CoolThread™ on the other.

• Motion isolation: built around Koala’s Zero Disturbance® motion-reduction design.

• Sizes offered (AU sizing): Single, King Single, Double, Queen, King, Super King. If you need a refresher on fit, see our guide to mattress sizes and dimensions.

• Price (Queen): current pricing changes with promotions.

• Price (Single): current pricing changes with promotions.

• Trial period: 120-day trial. We break down how to use that window in our guide to a mattress trial.

• Warranty: 10-year warranty.

• Delivery style: boxed mattress delivery, similar to what we cover in our bed-in-a-box guide.

• Cover & fabric makeup (selected):

  • Summer ticking: 81% polyester, 19% polyethylene

  • Winter ticking: 35% organic cotton, 13% polyester, 52% recycled polyester

• Country of origin: designed by Koala in Sydney; manufactured in China.

Pick the Koala Plus if you want a foam mattress that can run cooler than many foam competitors and lets you switch between two firmer comfort settings. It makes the most sense for people dealing with overheating or night sweats, which is why it fits the same reader intent as our roundups for the best mattresses for night sweats, the best mattresses for back sleepers, and the best mattresses for combination sleepers.

If you want more lift and a sturdier edge, a hybrid may suit you better. Our explainer on what a hybrid mattress is covers that difference in more detail. Among direct alternatives, the Brooklyn Bedding Aurora Luxe gives you more rebound and a stronger edge presence for hot sleep, while the Saatva Classic leans more traditional and supportive at the perimeter.

This mattress works best when you use the design as intended and are willing to unzip, flip, and fine-tune the setup. If you want a mattress you never have to think about, the extra components may feel like friction. Edge support is respectable for a foam model but still compresses under concentrated sitting, and the firm side may feel too direct if you prefer the deeper cradle we discuss in our guide to plush mattresses.

• Why choose the Koala Plus

  • You want seasonal surface changes and a real firmness flip in one mattress

  • You prefer low motion transfer over bounce

  • You want the kind of alignment focus often associated with zoned support mattresses

• Alternatives to consider

  • Brooklyn Bedding Aurora Luxe: more bounce and a sturdier edge for hot sleepers

  • Saatva Classic: more traditional lift and a firmer perimeter for frequent edge sitting

  • Helix Midnight Luxe: a more spring-forward feel for combination sleepers who want extra rebound

• Give each setup at least 3–5 nights before deciding how it really feels.

• If your low back feels tight, try the firm side for a full week before switching back.

• If your shoulder feels crowded on your side, go back to the medium-firm face.

• Use a breathable protector; our guide to a mattress protector vs topper explains why that can matter.

• Rotate the mattress on a schedule to spread out wear, but don’t assume that means fully flipping it end to end; our guide on flipping vs rotating a mattress breaks down the difference.

• Re-zip the topper carefully after any adjustment so the surface stays even.

• Avoid sitting on the same edge spot every morning if you want the perimeter to stay feeling more consistent.

• Pair it with a supportive, non-sagging base.

• Keep bedding lighter on warm nights so the cooling side can do more of the work.