The Safety 1st Sweet Dreams 5-inch Firm Crib and Toddler Mattress is a top-rated choice among American women for providing a safe and comfortable sleeping surface for their little ones. With a high-density thermo-bonded core made from polyester fibers, this mattress offers ample support for your child's posture. The mattress is lightweight and durable, with a 100% vinyl outer cover that is water-resistant and easy to clean. It fits standard cribs and toddler beds, and is made without any added flame retardants. Additionally, the mattress has been certified by GREENGUARD for low chemical emissions, ensuring a safe and healthy sleeping environment for your child.