The mattress matters! What to look for in a crib mattress

Nov 27, 2019 | Crib, Mattresses and Bedding, Key Sleep Tips

*** Read through to find a discount code for our favourite crib mattress brand!

We talk a lot about room environment – Dark, quiet, peaceful, no distractions. But what about what baby sleeps ON? Baby’s mattress can go a long way towards healthy rest!

From a safety perspective, here’s what health regulators recommend in regards to your crib mattress:

  • When buying a crib, cradle or bassinet, check for:
    • the date of manufacture
    • a product label with the model name or number
    • clear instructions on how to assemble and use the product

    Get out your measuring tape and check that:

    • slats are spaced no more than 6 centimetres (2 3/8 inches) apart
    • corner posts are no higher than 1.5 millimetres (1/16 inches) above the top of the sides of the crib

    When shopping for a mattress that comes with the product or is sold separately, check that:

    • the mattress is firm (some crib mattresses have a soft side and a firm side–make sure the firm side of the mattress is facing up.)
    • the mattress is tight-fitting
      • the gap between the sides of the crib, cradle or bassinet and the mattress is no bigger than 3 centimetres (1 3/16 inches) – push the mattress up against 1 side of the crib and then measure the gap on the other side to make sure that it is 3 centimetres or less
    • the mattress is the right thickness
      • for crib mattresses, not thicker than 15 centimetres (6 inches)
      • for cradle and bassinet mattresses, not thicker than 3.8 centimetres (1 1/2 inches)

Further to that, my own preference is a mattress that is made with products that are entirely chemical-free. That’s why I love Obasan!

Recently, I was thrilled to visit Obasan and get a full tour of their incredible inventory, including (most importantly!) their amazing crib mattresses. The mattresses are handmade in Ottawa (with retailers across North America!) and made with quality organic materials and completely chemical-free. They are breathable and moisture-wicking, helping to regulate baby’s temperature throughout the night. (Cooler is better for sleep!). Each mattress also comes with a Organic Wool Moisture Pad Protector!

I was so thrilled to be introduced to this brand that I’ve now partnered up with Obasan and they are offering you 10% off your purchase of an Obasan crib mattress! Purchase on their website and enter the code HAPPYSLEEP at checkout to receive your discount!

Sleep well, Happy Sleepers!



Erin Junker is a Professional Infant & Toddler Sleep Consultant, and owner of The Happy Sleep Company, working closely with tired parents to help them help their little ones get the healthy, restful sleep they need. Follow The Happy Sleep Company on Instagram and Facebook – let’s get your family the healthy, happy sleep you deserve!

Disclaimer: I only provide reviews and recommendations for products when I feel they are of great quality. As an Amazon Associate, I earn from qualifying purchases. I am a member of several affiliate marketing programs and, as such, I do receive a commission for purchases made through some product links on this website.

The advice provided by The Happy Sleep Company is not a substitute for medical advice. The advice on this website is provided solely for informational purposes in connection with common early childhood sleep issues that are wholly unrelated to medical conditions. Always seek the advice of your doctor or another qualified health practitioner with questions regarding medical conditions or the health or welfare of your child. 


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