The Simmons BeautySleep Refreshing Sleep Plus 120 Crib & Toddler Mattress has 120 interlocking coils for long lasting support on a mattress that will last for years. 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 water resistant vinyl cover repels wetness helping baby stay dry & comfy. Mattress meets or exceeds all federal flammability standards without the use of harmful chemicals. Limited 25 year warranty against defects in materials and workmanship.