Precious Angel Baby Crib & Toddler Bed Mattress is everything youll need and more throughout your little one's babyhood thanks to its unique 2-in-1 construction. Made with two different levels of firmness choose between the extra firm support or the additional cushioning for your infant and toddler respectively. This Safety 1st mattress also comes with a 100% Polypropylene non-removable outer cover that is waterproof and stain resistant to wipe clean in seconds. Whats more its lightweight construction is durable and suitable for any standard baby crib. Made without the use of flame retardant chemicals and has achieved GREENGUARD Gold certification, meeting the standard for low-chemical emissions for a sleep environment thats always safe and sound. Assembly required.