The Simmons BeautySleep Refreshing Sleep Supreme 234 Coil Crib & Toddler Mattress has 234 interlocking coils for long lasting support. Greenguard & Certipur-us certified. Sleep-4-Years Mattress: one side provides ideal firmness for newborns and the flip side offers convoluted foam comfort for toddlers. Reinforced border edge increases stability and Innofoam corner protectors create a sturdier mattress. Easy to clean hypoallergenic fabric cover has water resistant vinyl backing to keep baby dry & clean. Mattress meets or exceeds all federal flammability standards without the use of harmful chemicals. Limited 50 year warranty against defects in materials and workmanship.