The Crib Mattress Firmness Test You Can Do

A crib mattress that is too soft is a genuine safety risk, because it can conform to a baby’s face and restrict airflow. The firmness standard exists for a reason, and it is easy to check at home.

Test the mattress before you trust it.

• Press your palm into the center and release quickly
• A safe mattress springs back instantly with no handprint
• A soft one leaves an indentation that lingers
• Check for a snug fit with no gap at the crib rails

A firm, well-fitting mattress is non-negotiable. When in doubt, replace it, because a sagging mattress is not a comfort issue, it is a safety one.

A mattress that passes the firmness test is one of the few nursery purchases where more expensive is not always better. What matters is the spring-back, not the brand or the price tag on the box.