If you have never heard of Lullaby Earth, all you need to know is that it is a division of Naturepedic which just about everyone is familiar with. The crib mattress they have created combines two features which generally don’t go hand in hand, namely being both waterproof and breathable. Testers read about the claim and were skeptical to say the least. All it took was one good examination to discover that the claims were in fact quite true. Combined with nicely reinforced edges and just the right firmness, parents found an extremely breathable mattress that featured great airflow to keep baby comfortable. As for the surface, it was both waterproof and very easy to clean either with just a damp cloth. Accidents like dripping juice cups or diaper leakage cleaned up quickly with some water and gentle cleanser. Parents told us this would be the kind of mattress that could last for several babies. They also appreciated that the mattress was made without polyurethane foam or PVC.