One of THE most important purchases you will make for baby is your crib mattress. After all that is where your baby will be spending most of his or her time. Unfortunately, for many parents the crib mattress is an after-thought. It is easy to get caught up in the look of the nursery – the crib, the wall hangings, etc. that the crib mattress gets left behind. Good news for all parents! Whether you are in the market for a crib mattress for your new baby or you fit the “after-thought” category, now is the time to save big on Sealy crib mattresses at Walmart.