The Colgate 2-N-1 is a high-quality, dual-firmness crib mattress engineered to provide both the firmness infants need for proper development and the comfort toddlers prefer. The 2-N-1’s innerspring unit is exceptionally high quality, made of 135 coils of thick 13.5-gauge tempered steel and 9.0-gauge border rods for sturdy edge support and firmness. The spring unit is surrounded by a sustainable insulator pad made of coconut shell husks and two comfortable and supportive cushioning layers. Increased internal air flow and freshness is assured by multiple side vents, and mattress durability is provided by strong cloth binding. These high quality materials are protected by a triple-layered reinforced, waterproof, and tear-resistant mattress cover. Like all Colgate mattresses, the Colgate 2-N-1 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. The Colgate 2-N-1 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.