ComfiCore Folding Cot MattressWith a solid foam core engineered to provide the right amount of support and comfort for your little one, the BabyRest ComfiCore Cot Mattress is firm enough to be safe and supportive of your little one's growing body, while remaining comfortable for the quality, undisturbed sleep your baby needs. The ComfiCore also features ventilation channels through the foam core for maximum airflow, providing temperature regulation, breathability and freshness