The DaVinci Deluxe Coil Dual-sided Crib & Toddler Mattress is designed with 160 coils and polyester fiber fill for an extra firm sleeping surface that is GREENGUARD Gold certified and 100% non-toxic, so your baby can sleep safely and comfortably. This mattress features a waterproof, tear-resistant cover that will stay new through years of use. The Deluxe Coil Crib & Toddler Mattress is dual-sided to grow with your baby – use the firm side during the baby years and the cushier side for toddler years.