The Colgate Ultra II is a high-quality, orthopedic-style crib mattress designed with your littlest one in mind. Colgate believes it’s what on the inside that counts, which is why the Ultra II boasts an exceptionally high-quality spring unit made of 150 coils of extra thick 13.5-gauge tempered steel and 9.0-gauge border rods for edge support and extra firmness. Babies will love the comfort provided by an insulator pad made from coconut shell husks and two natural cotton batting cushioning layers, and you will love the easy-to-clean mattress cover that is waterproof, tear-resistant, and triple layer reinforced. Additional features include cloth binding seams for mattress durability and side vents for mattress freshness. Like all Colgate mattresses, the Colgate Ultra II is GREENGUARD ® Gold certified, CertiPUR-US ® certified, CPSIA certified, and compliant with all federal and state flammability requirements – without the use of fire retardant chemicals. Your Ultra II is proudly handcrafted in the USA by Colgate, The Crib Mattress Specialist®, a family-owned and operated business dedicated to baby’s safety since 1955.