This Triple Zone luxury foam mattress by LA Baby features an organic cotton cover that is hypo-allergenic easy to clean and soft to the touch. The mattress also features a firm soy foam core to provide support for your baby s developing spine. LA Baby has included a number of features to help you sleep easier. The border of this organic cotton mattress is designed to resist sinking in order to provide ongoing safety for your standing toddler. In addition the knitted fabric fire barrier is chemical-free and nontoxic. This mattress is easy to clean and luxurious to the touch. Infant Zone features: Extra firm soy foam provide support for babies developing spine Active Border Zone features: Resists sinking to provide safety for a standing toddler Toddler Zone features: Memory foam layer which provides ultimate comfort and support for toddlers growth L.A. Baby exclusive quilted organic cotton cover with dust mite barrier is water repellent hypo-allergenic easy to clean and luxurious to the touch Knitted fabric fire barrier chemical free non toxic Cloth binding prevents edge seams from splitting Air vents helps keep mattress fresh. Block of 5-inch soy foam core Dimensions: 52 inches long x 27.5 inches wide x 5.75 inches deep