Crib Mattress Common Questions - Crib Mattress Buying Guide

Last updated: October 2020

In this guide:

Here are Betty's answers to the most popular questions about crib mattresses. 

What is the standard size mattress for a crib?

Minimum standard crib mattress dimensions are 27 1/4″ wide x 51 5/8″ long. According to the CSPC (Consumer Product Safety Commission), a crib mattress should be a maximum of 6 inches thick.


How long does a crib mattress last?

Depending on material, condition and use, a crib mattress can last anywhere from 3 to 5 years. Convertible mattresses often have a longer lifespan as they are intended for use throughout the baby and toddler years.


Are toddler mattresses and crib mattresses the same?

The only difference that may occur is in firmness. A crib mattress for an infant must be exceptionally firm to ensure their safety while. Toddler mattresses tend to be softer and more comfortable when the risk of SIDS is less of a concern.

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