Sleep easy knowing that your baby is sleeping on the best crib mattress for breathability, safety, and comfort. The Air-X® Performance® Crib and Toddler Mattress is a 2-stage lightweight mattress that grows with your baby. One side, designed for infants, is firm and supportive, while the other is soft and adaptive for toddlers, giving your child the support they need, when they need it. Plus, our removable, washable top cover is engineered with our patented Air-X fabric technology to enhance air