This modern crib mattress is a dual firmness, waterproof and lightweight 5" mattress, as beautiful on the inside as it is on the outside. Extra firm PE foam is used, to give the proper support and safety needed for infants. The mattress features a revolutionary material called NaturesWeave™. This spun matrix material provides an open air construction that dissapates heat, for the perfect combination of airflow and pressure relief. Providing the comfort your toddler will prefer. Wrapped up with our ultra-soft cover, with waterproof backing, and a modern, distinctive fabric. Creating a safe and healthy sleep environment for your little one. Parents will appreciate the square corner, inverted seam design, which fits snugly in all standard-size American cribs and toddler beds. Like all Colgate mattresses, The Nuzzle Snuze™ Dottie Lottie is GREENGUARD ® Gold certified, CPSIA compliant, and compliant with all federal and state flammability requirements – without the use of fire retardant chemicals. Your Nuzzle Snuze™ Dottie Lottie 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.