All prices were accurate at the time of publishing. So the second time around, after doing a lot more research, I decided on ...

Every mattress we tested was the legal size—at least 27¼ inches by 51⅝ inches, and no more than 6 inches thick. This size ensures a snug fit in a standard-size crib. Safe crib mattresses keep ...

Almost all cribs use standard, U.S-sized mattresses. It's important to purchase them new – and make sure they are firm. Some studies link softer mattresses to sudden infant death syndrome or SIDS.

It's a standard-sized mattress (27.5 inches by 51.75 inches by 6 inches) that fits perfectly in our Delta Children 4-in-1 Convertible Crib. Once we convert the crib to a toddler bed, we'll still ...