How to Choose the Best Crib Mattress for Your Baby

Updated: Feb 25

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With multiple options for baby mattresses available, safety and comfort should be the deciding factor when choosing the best crib mattress for your baby. As a general rule of thumb, go for a firm, flat and supportive mattress. Meeting the official safety standards and certifications must also be taken into consideration.

Here’s a comprehensive list of what to look out for.

1. Size matters

This may be a given, but you’ll be surprised to see how many people overlook this.

Common mattress sizes for baby cribs include 130 x 72cm (Standard US size), 140 x 70cm and 120 x 60cm. There may be +/- 2cm discrepancy but likely to be negligible depending on the thickness of the mattress protector and crib sheet.

Getting your mattress size right is dependent on your baby crib size. We recommend getting both your crib and mattress at the same baby store to make sure it’s the right fit, and to enjoy any crib + mattress bundle sale they may have!

Make sure you can stick no more than two fingers in the space between the mattress edge and the crib frame- anything wider may become a health or suffocation hazard to your little one.

2. Firm is the way to go

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Getting an ultra-safe and durable baby crib is a waste if you pair it with a non-compatible mattress. Having a firm, flat and supportive mattress is crucial to developing your newborn’s delicate backbone and motor skills.

Getting a firm mattress is the bare minimum, but an extra-firm one would be ideal for babies, especially for newborns. There are also soft-medium firmness options but might put babies at higher risk of infant suffocation and sudden infant death syndrome (SIDS). Save the cushier options for when they reach toddlerhood. Having at least 8-10cm thickness ensures good support to last your baby through the long night.

Online research may not accurately depict the firmness you feel in real life, so do pop by your preferred baby store to check the mattress out in person if possible! Popular baby mattresses include Hatchling Waterproof Mattress (Extra Firm) and Babyletto Pure Core Mattress (Extra Firm), both of which are available for viewing at Hatchery Crib’s showroom.

3. Safety first

Safety is the utmost concern when it comes to baby products. When browsing for baby mattresses, make sure they have a certified safety label, non-toxic, phthalate-free, and hypoallergenic. Make sure to keep the crib free of objects to prevent the risk of suffocation.