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Cot mattress reviews

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Last updated: 08 May 2023


Checked for accuracy by our qualified fact-checkers and verifiers. Find out more about fact-checking at CHOICE.

Any sleep surface that's too soft could increase the risk of Sudden Unexpected Death in Infancy (SUDI). But how firm should a cot mattress be? We assess a range of mattresses from Boori, Grotime, Ikea, Stokke and more to see if they're safe for your baby.

Our lab test results show:

  • which cot mattresses passed the firmness test, which involves placing a test apparatus at various locations around the mattress and seeing whether it sinks too deeply into the surface
  • whether the claimed measurements match up with the actual measurements.

We score a mattress down if the thickness is significantly more than stated, as this could end up being a fall risk depending on the depth of the cot (a cot should be a minimum of 50cm when the base is set in the lowest position, and 30cm in the upper position).

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For many years, there was no way of telling whether a cot mattress was firm enough to be safe for your baby. Even now, mattresses can be legally sold without officially meeting any product safety requirements. However, responsible manufacturers test their mattresses to the voluntary standard AS/NZ 8811.1:2013, which outlines a method to detect mattress firmness.

Our interactive comparison tool helps you find out which models are safe. Our Recommended list will help you quickly see which models come out on top.

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List of brands we tested in this review.


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    The RRP at the time of testing. If the price is $0 this is because the mattress comes included with a cot and is not available for individual purchase. Check the good points for the model for more details.

    enter value/s in increments of 1 between 0 and 629

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    Passed firmness test

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    Whether the cot mattresses pass the sleep surface test method for firmness, AS/NZS 9911.1:2013. Parents are advised by safety experts to always choose a 'firm' mattress to minimise the risk of sudden unexpected death in infancy (SUDI).


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      The material the product claims to be made from.


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        Whether the mattress is designed to be double-sided. (We test both sides of the mattress for firmness, even if they aren't designed to be flipped over.)

          Removable cover

            Included in this review

            Members-only access
            • Recommended
            • CHOICE Expert Rating
            • Passed firmness test
            • Year tested
            • Measured width (mm)
            • Measured length (mm)
            • Measured thickness (mm)
            • Good points
            • Bad points
            • Price
            • Claimed dimensions (W x L x T, mm)
            • Mattress weight (kg)
            • Construction
            • Stated cover material
            • Stated inner material
            • Removable cover
            • Double-sided
            • Warranty (years)
            • Country of origin


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