Baby Cot Mattresses

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Explore our collection of cot mattresses

Get the cot mattress your baby deserves for a good night’s sleep at The Memo. Find comfy, cushioned mattresses that will work perfectly with your new crib and send them off to the land of zzzzzs with ease.

At The Memo, we stock mattresses for the Leander cot. The cot mattress is made from high-quality cold foam, ensuring breathability. Similarly, the Linea baby cot mattress is designed specifically for the Linea cot and is made from the same breathable materials as Leander.

If you’d prefer to buy a cot that comes with a mattress included, the SNOO Smart Sleeper is ideal. SNOO is a big investment but also the safest baby bed on the market, with the ability to calm crying and increase sleep. Alternatively, our travel cots both come with a mattress included, which is a lifesaver when you’re out and about with your baby.

Choosing the right cot mattress for you

You want to ensure your baby is comfortable and safe while sleeping, so choosing the right cot mattress is very important. Here are a couple of things to help you find the mattress that is right for you.

  • Safety First: Any mattress you look at should meet Australian and New Zealand safety standards. This means it has undergone rigorous testing to ensure it is safe for your baby to sleep on.
  • Size Matters: Ensure the mattress fits snugly in the cot, leaving no gaps that could be dangerous for your baby.
  • Material Quality: Look for hypoallergenic and breathable materials to ensure a healthy sleep environment. Consider the benefits of a spring mattress versus a foam mattress. Look to see if any treatments have been used on the mattress - some models in our collection at The Memo have been treated with anti-microbial products to protect against bacteria, dust mites and mildew.
  • Comfort and Support: Always opt for a firm cot mattress as this better supports your baby's developing body and reduces the risk of Sudden Infant Death Syndrome (SIDS).
  • Ease of Cleaning: A cot mattress with a removable, washable cover makes keeping your baby's sleep area clean and hygienic a breeze.

Quality baby cot mattresses available at The Memo

When setting up your nursery, a baby cot and mattress are the first and most important purchase. Need some advice on what else you need for your baby’s room? Take a read of our article on setting up your nursery now.

Discover our complete collection of cots and bassinets - including bassinet cots, as well as other sleep essentials like sleepwear, cot sheets, cot mattress protectors, general bedding and sleep aids to ensure your baby (and you) have the best sleep possible.

Shop the best cot mattress now at The Memo. We also offer flexible payment methods like AfterPay so you can get your mattress now and pay for it later.


How do I clean a cot mattress?

It’s relatively simple to clean a cot mattress. You can use mild soap and warm water for any light spot cleaning - remove the mattress from the cot to make it easier for you. Be careful not to soak the mattress, which can take a long time to fully dry. It’s important to make sure the mattress is fully dry before being placed back in the cot to avoid the risk of mould.

What is the standard cot mattress size in Australia?

At The Memo, we stock mattresses between 1300mm and 1400mm long and 690mm to 750mm long. The standard size for cot mattresses would be within this range. Cot mattresses at The Memo will fit most cots, but checking measurements or any recommendations when you purchase your cot is always a good idea.

Should a cot mattress be firm or soft?

A cot mattress should always be firm to support a baby’s growing body while sleeping. Firm mattresses also reduce the risk of injury or accident, such as suffocation or Sudden Infant Death Syndrome (SIDS).

Why are baby mattresses so firm?

A firm cot mattress is important, as it provides babies with a safe and supportive surface to sleep on. You want to make sure that your baby’s head and body are properly supported while sleeping to lower the risk of injury.

How thick should a cot mattress be?

To support your baby properly, a cot mattress should be between 90 and 100mm thick. The collection of cot mattresses at The Memo are all at least 90mm thick.

How do I know which cot mattress I need?

Your cot mattress should always fit snugly within your cot and be reasonably firm to support your baby while they sleep. You may also want to consider the materials the mattress is made of, the quality of the materials and the breathability.

Is a spring or foam cot mattress better for babies?

Again, choosing between these cot mattresses all depends on preference, as both spring or foam mattresses have benefits. Foam mattresses have better heat regulation and are generally lighter. Springs can offer durability and support.

Should you use a mattress protector on a cot?

It’s a great idea to use a mattress protector in your cot. The protector can help extend the life of your mattress. Choose a waterproof version to protect against unavoidable spills and stains - it’s much easier to throw your cot mattress protector in the wash than it is your mattress!

Is there a difference between a baby mattress and a toddler mattress?

Toddler mattresses are generally a bit softer than baby mattresses. They can be larger than your regular cot, or you can invest in a cot mattress extender, which can be added to a cot mattress to fit a toddler bed.