Dual-Sided Crib Mattress For Infant And Toddler Use – Breathable infant side with silky bamboo rayon cover and waterproof, antibacterial toddler side provides hygienic, safe, and comfortable sleep for growing babies. Dual Firmness For Growing Babies – Firm infant side and supportive toddler side meet ASTM and federal crib safety standards, offering proper fit and comfort from newborn to toddler stages. Eco-Friendly And Lightweight Design – Made with sustainable, American-sourced materials, lightweight for easy sheet changes, and crafted for durability, safety, and long-lasting support. Fits Standard Cribs And Toddler Beds – Measures 52" x 28" for a snug fit in most standard cribs and toddler beds, ensuring safe sleep transitions from infancy to toddlerhood. Greenguard Gold Certified And Non-Toxic – Low chemical emissions and free from harmful substances for healthier indoor air quality, proudly made in the USA by trusted manufacturer Kolcraft.