Size, firmness and quality are the main considerations when purchasing a crib. Small mattresses leave gaps between the crib and mattress that could trap your baby. Soft mattresses pose a risk of suffocation or Sudden Infant Death Syndrome (SIDS). You have the option to either buy a foam or innerspring baby mattress. Either type is an acceptable baby mattress material, according to Consumer Reports. They recommend focusing on quality and safety when considering which baby mattress to purchase.
Step 1
Check the size of the mattress. Shop only in stores that display cribs. Place the mattress in the crib. If you can place more than two fingers side-by-side between the crib and the mattress, it's too small.
Step 2
Press on the mattress center and edges. If the mattress material conforms to your hand as opposed to snapping back, it's too soft.
If buying a foam mattress, pick it up and squeeze it in the middle on both sides. The harder it feels to squeeze, the firmer the mattress.
Step 3
Purchase a foam mattress to save money--they're cheaper than innerspring mattresses--or if you prefer a lighter mattress that is easier to lift from the crib when changing sheets.
Purchase an innerspring mattress if you prefer a mattress that keeps its shape longer. If you plan on using the mattress for many years, for multiple children or in your child's toddler bed, choose an innerspring mattress.
Step 4
Purchase a baby mattress with a double or triple-laminated mattress cover reinforced with nylon to repel water and resist tearing.
Step 5
Purchase a baby mattress with vents to prevent airborne particles from entering the mattress and to allow odors to escape from the mattress.


