Best Cot Mattress

Top 3 cot mattresses at a glance

• Ecosa Cot Mattress - Best Overall: Firm, 100% breathable and washable, Red Nose approved and independently tested to AS/NZS 8811.1:2013. From $378.
• Boori Cot Bed Mattress - Best Value: Firm pocket-spring support from a trusted AU nursery brand, breathable cover, AS/NZS 8811.1:2013 compliant, suits newborn to 5 years. $196.95.
• Love N Care Bamboo Pocket Spring Mattress - Best Breathable Bamboo: Firm high-density core with a naturally breathable, anti-bacterial bamboo cover, AS/NZS 8811.1:2013 tested. $219.99.

What’s the best cot mattress in Australia?

For most families the Ecosa Cot Mattress is the best cot mattress in Australia right now. It is firm to the exact level infants need, it is independently lab-tested to the AS/NZS 8811.1:2013 firmness standard, it carries Red Nose approval, and its 3D air-mesh core plus fully washable cover make it both the most breathable and the most hygienic option we assessed.

If you want to spend less, the Boori Cot Bed Mattress delivers firm, standard-compliant pocket-spring support at a lower price and grows with your child to age 5. For parents who prefer natural fibres, the Love N Care Bamboo Pocket Spring Mattress pairs a firm core with a breathable bamboo cover. Whichever you choose, the non-negotiables are the same: firm, flat, breathable, a snug fit in the cot, and independent AS/NZS 8811.1 testing.

Safety note: A cot mattress must be firm and fit the cot snugly, with no more than a 2 to 3 cm gap around the edges so a baby cannot become wedged. Never place a baby to sleep on a soft, second-hand or sagging mattress, and keep the cot free of pillows, soft toys and loose bedding. When in doubt, follow Red Nose safe-sleep guidance.

The 4 best cot mattresses in Australia

• Ecosa Cot Mattress - Best Overall
• Boori Cot Bed Mattress - Best Value
• Love N Care Bamboo Pocket Spring Mattress - Best Breathable Bamboo
• Tasman Eco Orthopaedic Pocket Spring Cot Mattress - Best Pocket Spring

1. Ecosa Cot Mattress - Best Overall

The Ecosa Cot Mattress is the safest all-round pick we assessed. It is engineered to the strict firmness level infants need, and Ecosa has it independently lab-tested to AS/NZS 8811.1:2013 (Method 1, the sleep-surface firmness test). It has also passed the Red Nose Product Review Committee and is deemed to meet the Red Nose Safe Sleeping criteria, which is exactly the reassurance new parents want.

What sets it apart is breathability and hygiene. The Nestflow core is a fully open, 3D air-mesh structure that lets air move straight through the mattress, reducing heat build-up and the risk of re-breathing if your baby turns face-down. Both the cover and the core are washable, so spills and the inevitable nappy accidents are easy to deal with rather than a permanent stain. It fits a standard Australian cot at 130 x 69 cm, with a smaller 100 x 60 cm size for compact cots.

Pros

• Firm and independently tested to AS/NZS 8811.1:2013
• Red Nose approved for safe sleeping
• Fully breathable 3D air-mesh core
• Both cover and core are washable
• Long 100-night trial and 15-year warranty

Cons

• One of the pricier options
• Only two sizes, so check it fits your cot before buying

2. Boori Cot Bed Mattress - Best Value

Boori is one of Australia’s best-known nursery brands, and its Cot Bed Mattress is our value pick. It uses independently working pocket springs to hold a firm, even, supportive surface that complies with the AS/NZS 8811.1:2013 cot-mattress firmness standard, so it ticks the most important safety box at a noticeably lower price than the premium options.

The breathable outer layer helps your baby regulate temperature, and at 132 x 70 cm it fits Boori cot beds and most standard Australian cots. Because it is rated for newborn to 5 years, it can carry a child from the cot through to a toddler bed, which stretches the value further. Note that it arrives compressed and needs around 24 hours to fully expand before use.

Pros

• Firm pocket-spring support that meets AS/NZS 8811.1:2013
• Strong price from a trusted AU nursery brand
• Breathable outer layer
• Suits newborn to 5 years
• 5-year warranty

Cons

• Needs about 24 hours to decompress before first use
• Cannot be returned once opened, for hygiene reasons

3. Love N Care Bamboo Pocket Spring Mattress - Best Breathable Bamboo

If you prefer natural fibres, the Love N Care Bamboo Pocket Spring Mattress is our pick. Its high-density, thermo-bonded core is paired with a pocket-spring base to give the firm, evenly distributed support infants need, and it has been tested and approved to the AS/NZS 8811.1:2013 cot-mattress standard.

The standout is the cover: 100% biodegradable bamboo fibre that is naturally breathable and anti-bacterial, helping to prevent overheating and keep the sleep surface fresh. It comes in the standard 130 x 69 cm size as well as a larger 131 x 76 cm option, and Love N Care backs the springs with a 6-year warranty.

Pros

• Firm core tested to AS/NZS 8811.1:2013
• Naturally breathable, anti-bacterial bamboo cover
• Two sizes to fit different cots
• Long 6-year spring warranty
• Natural, biodegradable cover fabric

Cons

• Pocket-spring build is heavier than a foam core
• Bamboo cover benefits from gentle, regular washing

4. Tasman Eco Orthopaedic Pocket Spring Cot Mattress - Best Pocket Spring

The Tasman Eco Orthopaedic Pocket Spring Cot Mattress rounds out our list for parents who want a dedicated pocket-spring build. Individually wrapped springs keep a firm, supportive surface across the whole mattress, and it has been tested and approved to the AS/NZS 8811.1:2013 cot-mattress firmness standard, so it meets the core safety requirement for infants.

A 10 mm latex and foam layer helps avoid heat retention, and the zip-off bamboo-blend cover is easy to remove and wash, which matters a lot with a baby. It comes in several standard cot sizes, so measure your cot and pick the closest fit for a snug result.

Pros

• Firm pocket-spring support approved to AS/NZS 8811.1:2013
• Zip-off, washable bamboo-blend cover
• Topper layer helps reduce heat retention
• Several sizes for a snug cot fit

Cons

• Dearer than a basic foam cot mattress
• Pocket-spring construction adds weight

How we picked these cot mattresses

Cot mattresses are a safety product first and a comfort product second, so our selection criteria are built around the advice of Australia’s safe-sleep authorities rather than around plushness or brand marketing.

• Firmness first: every pick is genuinely firm. A baby should not sink in. Soft or pillow-top surfaces are excluded because they raise the risk of suffocation and SUDI.
• AS/NZS 8811.1 firmness testing: we only list mattresses independently tested to the AS/NZS 8811.1:2013 Method 1 sleep-surface firmness test (or Red Nose approved).
• Breathability: we favour air-mesh cores and breathable covers that reduce heat build-up and the chance of a baby re-breathing trapped air.
• Snug fit: we checked dimensions against standard Australian cot sizes so the mattress sits with no more than a 2 to 3 cm gap around the edges.
• Waterproof or washable cover: a removable, washable or wipeable cover keeps the sleep surface clean and hygienic between the inevitable spills.
• Genuine infant cot mattress: we only include true infant cot mattresses, not kids’ or single-bed mattresses that happen to be marketed to families.

What makes a safe cot mattress

1. Firmness

Firmness is the single most important factor. An infant’s mattress should be firm and flat so it keeps its shape and does not mould around the face. If you press your hand into the surface it should spring back quickly and leave no lasting dip. A firm surface keeps a baby’s airway clear even if they roll, which is why every mattress on this list is firm and independently firmness-tested.

2. Correct fit

A mattress that is too small leaves gaps a baby can become wedged in. Measure your cot and choose a mattress that fits snugly, with no more than a 2 to 3 cm gap between the mattress and the cot sides. If you can fit more than two fingers between the mattress and the frame, it is too small.

3. Breathability

Babies cannot easily regulate their temperature and often end up with their face against the mattress. A breathable core and cover let air pass through, reducing heat build-up and the risk of re-breathing exhaled carbon dioxide. Air-mesh cores and natural covers such as bamboo are good signs.

4. Waterproof and washable cover

Nappy leaks and spills are a fact of life. A removable, machine-washable or wipe-clean waterproof cover keeps the sleep surface hygienic and stops moisture soaking into the core, where it can harbour bacteria and mould.

5. AS/NZS 8811.1 and safe-sleep certification

Look for the voluntary Australian firmness standard AS/NZS 8811.1:2013 and, where available, Red Nose approval. These show the mattress has been independently tested to meet the firmness level infants need, rather than relying on marketing claims alone.

Frequently asked questions

How firm should a baby cot mattress be?

It should be firm and flat. When you press the surface it should spring back quickly with no lasting indent. A baby should rest on top of the mattress, not sink into it. Soft, plush or pillow-top surfaces are not safe for infants and are linked to a higher risk of SUDI/SIDS.

How do I know a cot mattress fits safely?

Measure the internal length and width of your cot and match it to the mattress. The gap between the mattress and the cot sides should be no more than 2 to 3 cm. If you can fit more than two fingers in the gap, the mattress is too small and should not be used.

Is a soft or memory-foam mattress safe for a baby?

No. Soft mattresses, memory-foam toppers, pillow-tops and sheepskins can conform to a baby’s face and obstruct breathing. For infants, choose a firm, flat mattress that meets the AS/NZS 8811.1 firmness standard.

What is AS/NZS 8811.1?

AS/NZS 8811.1:2013 is Australia and New Zealand’s voluntary test method for the firmness of infant sleep surfaces (Method 1). A mattress tested and approved to this standard has been independently checked to meet the firmness level recommended for infants.

Should I buy a second-hand cot mattress?

It is best to use a mattress that is firm, flat, clean, dry, well-fitting and in good condition. If you do reuse one, make sure it is still firm, has no sagging, dips or tears, has a waterproof cover, and fits the cot snugly. Red Nose provides detailed guidance on safe mattress reuse.

When can my child move to a softer mattress?

Keep to a firm mattress for the whole first year and while your child is still sleeping in a cot. Softer surfaces and pillows are only introduced later, generally once a child has moved to a bed as a toddler.

Conclusion

A cot mattress is one of the few baby purchases where safety clearly outranks everything else. Get the firmness, fit and breathability right and you have removed a real risk from your baby’s sleep environment.

Our overall winner is the Ecosa Cot Mattress: firm, Red Nose approved, independently tested to AS/NZS 8811.1:2013, and the most breathable and washable option we assessed. If you want to spend less, the Boori Cot Bed Mattress is outstanding value, while the Love N Care Bamboo Pocket Spring Mattress is the pick for natural-fibre breathability. Whichever you choose, insist on firm, flat, breathable and a snug fit, and follow Red Nose safe-sleep advice.

For older children who have outgrown the cot, see our best mattress for kids guide.

Sources

• Red Nose Australia - Safe Sleeping
• ACCC Product Safety Australia - Babies and kids
• Standards Australia - AS/NZS 8811.1:2013 methods of testing infant products
• Sleep Foundation - Baby Sleep