This mattress is amazing! First off, the design is super cute( little moons and stars embedded in the mattress ) , second, each side of the mattress caters to a different age. One side of the mattress is breathable for infants and the other side is for toddlers up to 4 years old. The infant side is much firmer and breathable while the toddler side is softer. My two month old son sleeps well on this mattress. Not only does this mattress look great, it is also great quality!