There should be no obvious gap between the crib frame and mattress. Ensure that you are not able to push more than one finger down in between the crib mattress and crib frame. Look for a reasonably firm mattress. Soft mattresses always appear like a good choice from an adult perspective. But the fact remains that babies need a more solid sleep surface. This is because they can't move themselves out of positions in case their face sinks into the mattress if they get turned over. So push down on the crib mattress in order to see how much your hand sinks into the mattress. The more the resistance is, the firmer will be the crib mattress.

   Foam crib mattresses are generally less expensive than coil crib mattresses. These are just as safe, in case they aren't too soft. Foam crib mattress is lighter weight-wise. This is easy for you when you pick them up in order to change sheets. For coil crib mattress, check the number of coils as more coils mean a firmer mattress.

          Check the cover as multi-layer covers indicate better durability, if one layer gets worn through or compromised. At times crib mattress may have an anti-microbial layer on top. This will help to cut down on germs from spit-ups as well as diaper accidents. Check to see how the crib mattress cover is sealed. The plastic must be sturdy, and not weak and ready to split open.  The fabric seams should be smooth from the start and not stressed and ready to pop open. In case allergies run in the family, opt for a fully sealed crib mattress.

   In case you're on a budget, no need to worry. A crib mattress actually does not have to be expensive to be safe, durable as well as useful. There are crib mattresses with allergy-reducing covers, natural materials as well as organic crib mattresses. These are specialty mattresses which are worth every penny if they properly fill a need for your baby or your family.

       A good crib mattress will not only make bedtime cozier for your baby, but will also support his growing bones. What makes a crib mattress good is a matter of preference. You need to consider cost, comfort, as well as longevity since your child will probably sleep in his crib for up to three years. Think about convenience too; as many parents like to remove the mattress from the crib each time.