A "safe crib" refers to a bed for babies or young children that is designed and built in a way that reduces the risk of accidents or injuries while they sleep or play in it. Full definition
Here are some of the best and safest crib mattresses to consider, in my order of preference. (parenthood.guide)
The federal government has its own standards for safe cribs, but because the laws changed in 2011, people are still buying used cribs that don't meet the new standards. (modernmom.com)
Four levels for the mattress support allow safe crib time while your child grows into the toddler bed. (simplybabyfurniture.com)