Having a new baby is so scary. You want to make sure they’re safe. This mattress does this for us. One side is for when he is an infant and the other side is for when he’s a toddler. The infant side is a little more firm than the toddler side. I love that it’s breathable. It’s also waterproof on the toddler side!! Just in case there’s accidents. The cover can be taken off and washed. The inside can be washed off too!! It fits in the crib perfect and the crib bed sheets fit it perfectly also. I love the design on the mattress. It’s very cute. I love that it’s hypoallergenic. It is wonderful that this mattress will last for years!! And it is so comfortable!! I tried it out!!