The Sealy Baby Posturepedic Grace 2-Stage Hybrid infant and toddler crib mattress provides one-of-a-kind targeted support with the Posturepedic® Advanced Zone Support System. Legendary Posturepedic® zoned support grows with your child"™s needs with targeted areas of support and comfort. The infant sweet spot includes an ultra firm ortho-support pad for premium firmness where infants are laid down in their cribs. The toddler side is upgraded with soybean memory foam plus cotton padding for contouring comfort throughout the mattress surface, plus extra head and foot supports for your more active toddler. Hybrid design with family-friendly soybean memory foam plus 204 premium steel innerspring engineered in the USA for a lifetime of support plus a steel support frame and 10 EverEdge® guards all around for added safety and lasting durability. Breathable cotton fabric is gentle on baby"™s skin while a waterproof barrier keeps the mattress protected against leaky messes, odors, mold and bacteria from growing inside.