Product Description The Ultra II Innerspring Crib Mattress by Colgate Mattress is a high-quality, innovative innerspring crib mattress, offering your baby and/or toddler comfort, safety, and support. Firm support comes from the high quality spring unit, composed of 150 thick 13.5 gauge coils. It has an extra edge support and long-lasting durability from thick 9.0 gauge steel border rods. This assures comfort and durability from natural and renewable coir fiber insulator pad made from coconut shell husks and all-natural latex. Extra comfort from two cushioning layers of natural cotton batting and hypoallergenic foam. Like all Colgate Mattresses, the Ultra II is certified by the Juvenile Products Manufacturers Association (JPMA) and meets or exceeds all applicable American Society for Testing and materials (ASTM) and Consumer Products Safety Commission (CPSC) safety standards. From the Manufacturer High quality orthopedic style innerspring crib mattress. It fits all standard size cribs and toddler beds. Firm support from high quality spring unit with 150 thick 13.5 gauge coils. It has an extra edge support and long-lasting durability from thick 9.0 gauge steel border rods. This assures comfort and durability from natural and renewable coir fiber insulator pad made from coconut shell husks and all-natural latex. Extra comfort from two cushioning layers of natural cotton batting and hypoallergenic foam.