Made with durability in mind, the Colgate Alva™ crib mattress delivers a heavy-duty innerspring solution for your little one. This adaptable 2-stage mattress has one side specially designed for infants, while the other is ready for their toddler days. Hypoallergenic and non-toxic, its soft cloth cover is both durable and safe. Inverted seams ensure its waterproof barrier lasts through the years. At the core, an innerspring unit provides support for growing babies with extra thick steel coils and border rods for edge support. Soft memory foam on the other side makes a comfortable bed for toddlers. Made from coconut husks, a renewable coir fiber insulator pad acts as a protective barrier between the innerspring unit and foam comfort layers. Natural cotton batting adds a level of cushioning to give babies a cradling feel. Limited Lifetime Warranty