Best Mattress for Insomnia

Insomnia affects a significant proportion of Australian adults at some point in their lives — from occasional bad nights during stressful periods to chronic patterns that disrupt daily life. While no mattress can treat or cure insomnia, an unsupportive or uncomfortable mattress may contribute to poor sleep quality by making it harder to get comfortable, stay asleep, or wake up feeling rested. This guide walks through what insomnia is, which mattress features may support a more comfortable sleep environment, when it's worth considering a new mattress, and — most importantly — when to speak with a healthcare professional. Backed by Koala's 120-day trial so you can test the right setup properly.

The best mattress for insomnia is one that supports your comfort and sleep quality rather than treating the condition itself. Features like pressure relief, spinal support, motion isolation and temperature regulation may help reduce sleep disruptions caused by discomfort. If insomnia is persistent or severe, it's important to consult a healthcare professional, as a mattress alone cannot treat the underlying causes.

Key Takeaways

• A mattress cannot treat, cure, or prevent insomnia — but the right one may help create a more comfortable sleep environment

• Six features matter most: pressure relief, medium-firm support, temperature regulation, motion isolation, durability, and low motion transfer

• Chronic insomnia (3+ nights per week for 3+ months) warrants a conversation with your GP or a healthcare professional

• A mattress older than 7-10 years may be contributing to sleep disruptions through lost support, body impressions, or heat retention

• Koala's mattress range covers different comfort priorities: Koala Mattress (all-round baseline), Koala Plus (cooling + customisable firmness), Koala Polar+ (cooling specialist), Koala Luxe (premium), Koala SE (CHOICE®-Recommended budget baseline)

• The 120-day trial is a practical way to assess whether a comfort upgrade may help — sleep on it through real conditions before deciding

• For persistent insomnia, see your GP. AU support: healthdirect 1800 022 222 | Sleep Health Foundation | Beyond Blue

What is insomnia?

Insomnia is a sleep disorder characterised by persistent difficulty falling asleep, staying asleep, or waking too early and being unable to return to sleep — even when the opportunity for sleep is available. According to the Sleep Health Foundation Australia, insomnia symptoms affect a significant portion of Australian adults, and the condition can range from short-term episodes to chronic patterns lasting months or years.

Acute vs chronic insomnia. Acute insomnia is short-term — typically lasting days to a few weeks and often triggered by stress, life changes, illness, or environmental disruption. Chronic insomnia is defined as occurring at least three nights per week for three or more months and generally warrants medical assessment.

Common symptoms:

• Difficulty falling asleep at bedtime

• Waking frequently during the night

• Waking too early and being unable to return to sleep

• Feeling unrested despite adequate time in bed

• Daytime fatigue, irritability, or difficulty concentrating

Insomnia can occur on its own or alongside other conditions such as anxiety, depression, chronic pain, or sleep apnoea. This article focuses on the sleep environment layer — one factor among many. It isn't a diagnostic guide, and it isn't a substitute for professional advice.

Can your mattress affect sleep quality?

A mattress doesn't cause insomnia. However, an uncomfortable or worn mattress may make it harder to get comfortable at bedtime or stay asleep through the night. Six mattress factors can influence overall sleep quality:

Pressure relief. A mattress that distributes body weight evenly reduces pressure at the shoulders, hips, and lower back — common sources of overnight discomfort that can prompt frequent position changes and brief wake events.

Spinal alignment. The right firmness keeps the spine in a neutral position throughout the night. Too soft, and the hips may sink; too firm, and pressure points may develop. Both can contribute to overnight discomfort.

Motion isolation. For couples, a mattress that absorbs partner movement reduces disturbance from a restless sleeping partner. Repeated brief wake events from partner movement can worsen sleep quality over time.

Temperature regulation. Overheating is a common trigger for waking. Body temperature naturally drops slightly during sleep, and a mattress that traps heat can work against this natural process. Australian summers make this factor especially relevant.

Comfort preferences. Personal comfort matters. A mattress that feels comfortable to you psychologically supports better sleep onset — regardless of the underlying construction.

Mattress age. Mattresses degrade over time. Sagging, body impressions, and heat retention typically increase after 7-10 years, and older mattresses may quietly contribute to poorer sleep than a newer setup.

While a mattress doesn't cause insomnia, an uncomfortable or worn mattress may make it harder to get comfortable or stay asleep.

What makes a mattress suitable for insomnia sufferers?

Rather than searching for a single "best" mattress, focus on features that may support a more comfortable sleep environment.

Pressure Relief

A mattress with adequate pressure relief cushions the heaviest parts of the body — shoulders, hips, lower back — reducing the small pressure-driven position changes that can fragment sleep. Open-cell foams like Koala's Kloudcell® combine responsive support with pressure-distributing contour.

Medium-Firm Support

Research consistently suggests that medium-firm mattresses tend to work best for a broad range of sleepers. Medium-firm keeps the spine aligned without creating pressure points that develop overnight on very firm surfaces. If you're not sure of your preference, a flippable mattress like the Koala Mattress or Koala Plus lets you switch between medium-firm and firm during the trial period.

Temperature Regulation

Overheating disrupts sleep more than most people realise. Look for open-cell foam construction, breathable covers (TENCEL™ Lyocell or cotton), and cooling technologies like gel infusion, phase-change materials, or copper. Koala's Polar+ Mattress is engineered specifically for temperature-sensitive sleepers.

Motion Isolation

If you share a bed, motion isolation reduces partner-driven disturbance. Koala's Zero Disturbance® technology absorbs movement across the mattress surface, so shifts from one side aren't felt on the other.

Durability

A mattress that maintains its support and comfort over years matters more for insomnia sufferers than for occasional-issue sleepers. Look for higher-density foams, quality construction, and warranties of 10+ years. Koala's Kloudcell® is tested at 95% comfort retention after 8 years.

Low Motion Transfer

Related to motion isolation but distinct — low motion transfer refers to how quickly the mattress returns to its neutral state after movement. Fast-response foams (like Kloudcell®) reduce the "waves" that some mattresses create when you or a partner move, helping you stay comfortable through position changes.

For more on how mattress firmness and construction affects sleep comfort, see our how to choose a mattress guide.

Who may benefit from a new mattress?

Not everyone with insomnia will benefit from a new mattress — many cases have causes unrelated to the sleep surface. However, if your sleep issues coincide with one or more of the following, a mattress upgrade may be worth considering:

• You wake up sore or stiff — pressure points and lost support are common signs of a mattress that no longer suits you

• You run hot at night — an ageing foam mattress or non-breathable construction can trap heat

• You share a bed with a restless partner — motion transfer from a partner can be a significant disruption

• You're a light sleeper — small comfort or temperature issues can wake light sleepers more easily

• Your mattress is 7-10+ years old — well past its typical support lifespan

• You sleep better in hotels or when travelling — a strong signal your current mattress no longer matches your body's needs

For sleepers whose primary concern is back pain rather than general insomnia, see our best mattress for back pain guide. For hot sleepers specifically, our best mattress for hot sleepers guide covers cooling-focused options.

How to know it's time to replace your mattress

If you're not sure whether your current mattress may be contributing to poor sleep, these are the most reliable signals:

If you tick more than two of these, a new mattress is worth considering as one part of a broader sleep review. For more on mattress lifespan and replacement timing, see our how long does a mattress last guide.

Koala mattresses for sleep comfort at a glance

All five come with our 120-day trial and 10-year warranty. To compare in person, visit our Koala Moore Park Showroom in Sydney.

Our Koala Picks: Mattresses that support sleep comfort

Feature-led picks — no claims about treating insomnia. Choose based on which comfort priorities matter most to your sleep style.

Koala Mattress (Core) — the all-round baseline

The Koala Mattress is Australia's most-awarded mattress — ProductReview Mattress of the Year 2023, 2024 + 2025. Its flippable Kloudcell® comfort layer lets you switch between medium-firm and firm to find your preferred feel, and 3-zone support delivers pressure relief at the shoulders and hips. Zero Disturbance® motion isolation makes it a strong choice for couples where one partner's movement currently disrupts the other's sleep. Optional Partner Preference allows different firmness sides for couples with different comfort needs.

Best for sleepers who want a well-reviewed baseline with the flexibility to test both firmness levels during the 120-day trial.

Koala Plus — cooling + customisable firmness

The Koala Plus adds Cooling Gel Kloudcell® (designed to sleep 13% cooler than leading online brands) and CoolThread™ moisture-wicking fibres. A seasonal flippable topper (Organic Cotton for winter cosiness ↔ CoolThread™ for summer cooling) means one mattress handles the full range of Australian conditions. Also flippable between medium-firm and firm.

Best for sleepers who run warm at night — one common cause of frequent waking — and want a customisable feel.

Koala Polar+ — cooling specialist

The Koala Polar+ is our most-cooling mattress. PolarBands™ over Cooling Kloudcell® deliver up to 5°C cooler sleep than the Plus, making it the pick for insomnia sufferers whose primary disruption is heat-driven waking. Fixed medium-firm feel.

Best for sleepers in humid coastal AU climates or anyone who consistently wakes hot and sweaty.

Koala Luxe — premium comfort

The Koala Luxe is our premium mattress — 9cm Kloudcell® comfort layer (50% more than the SE), 7-zone all-foam support core, copper-infused Kloudcell® for heat dissipation, phase-change temperature control, and an Australian Cashmere cover. Medium-firm feel, fixed.

Best for sleepers wanting the deepest comfort layer + most-supportive zoned core + cooling in one mattress.

Koala SE — CHOICE®-Recommended budget baseline

The Koala SE is our entry-tier mattress — CHOICE®-Recommended medium-firm baseline with Kloudcell® open-cell foam and 3-zone support. Kloudcell® is tested at 95% comfort retention after 8 years, so the budget tier doesn't mean short-lived.

Best for sleepers on a budget who still want a supportive, CHOICE-verified baseline.

For a broader comparison beyond insomnia-specific considerations, see our most comfortable mattresses in Australia guide.

Other ways to improve sleep quality

A supportive mattress is one factor in overall sleep quality — not the whole picture. Several other changes may help create a more comfortable sleep environment:

Sleep hygiene. Consistent bedtime routines and a wind-down period before sleep help the body prepare for rest. For more, see our sleep hygiene guide.

Regular schedule. Going to bed and waking up at similar times each day — including weekends — supports the body's natural sleep-wake rhythm.

Reduce caffeine intake. Caffeine has a longer half-life than most people realise. A late-afternoon coffee can still affect sleep onset that night. The Sleep Health Foundation recommends avoiding caffeine within 6 hours of bedtime.

Limit screens before bed. Bright screens delay the release of melatonin, the hormone that supports sleep onset. A 60-minute screen-free wind-down is a common recommendation.

Bedroom temperature. The Sleep Health Foundation recommends a bedroom temperature of 17-19°C for most adults. For a full guide to bedroom temperature, see our best bedroom temperature for sleep article.

Fall-asleep techniques. For behavioural techniques that may help with sleep onset, see our how to fall asleep fast guide.

Speak with a healthcare professional for persistent insomnia. If sleep problems continue for more than a few weeks despite environmental changes, professional support is the right next step. Details in the next section.

When to see a healthcare professional

A comfortable mattress may help create a better sleep environment — but it's not a treatment for insomnia. If you experience any of the following, speak with a healthcare professional:

• Chronic insomnia — sleep difficulties on three or more nights per week for three months or more

• Daytime function is affected — persistent fatigue, difficulty concentrating, mood changes, or reduced work/school performance

• Insomnia alongside other conditions — anxiety, depression, chronic pain, or breathing difficulties during sleep may need coordinated treatment

• Sleep problems worsen despite environmental changes — including a new mattress, improved sleep hygiene, and reduced caffeine

• You suspect a sleep disorder — such as sleep apnoea, restless legs syndrome, or circadian rhythm disorders

Your GP is generally the right starting point. They can assess your sleep patterns, rule out or identify underlying conditions, and refer you to a sleep specialist or psychologist trained in cognitive behavioural therapy for insomnia (CBT-I) if appropriate.

AU resources for sleep-related concerns:

• Sleep Health Foundation Australia — Australia's leading independent sleep authority

• healthdirect helpline — 1800 022 222 (24/7)

• Better Health Channel (VIC) — evidence-based health information

• Beyond Blue — mental health support, including for insomnia associated with anxiety or depression

• Kids Helpline — 1800 55 1800 for younger Australians (5-25 years) experiencing sleep issues alongside mental health concerns

This article focuses on mattress and sleep environment considerations — one factor in a broader picture. Persistent or severe insomnia deserves professional attention.

Build a comfortable sleep environment with confidence

The best mattress for insomnia isn't one that promises to cure the condition — it's one that provides the comfort, support, and sleep environment that may help you rest more comfortably while you address any underlying causes with appropriate care. Our Koala mattress range is built around Kloudcell® open-cell foam, backed by a 120-day trial that lets you assess whether a comfort upgrade helps your sleep. If it isn't right, we'll arrange a return and a full product refund.

Shop the Koala mattress range →