The Simmons BeautySleep Kids Radiant Diamond Crib and Toddler Mattress is the perfect solution for a sound, restful sleep. Thoughtfully made with a sustainably sourced fiber core for extra-firm support, this mattress is designed nurture your little one from day one. This mattress also features a waterproof cover that is stain-resistant to help fully protect against liquids. Simply wipe clean with mild soap and water. Made to ensure a snug fit inside your crib or toddler bed, this baby mattress has square corners to ensure a perfect fit inside your baby's bed. The Simmons BeautySleep Kids Radiant Diamond Crib and Toddler Mattress is GREENGUARD Gold certified. Tested to meet or exceed the most stringent chemical emissions standards to create a healthier home for your baby, it has been screened for more than 10,000 chemicals and VOCs that are known to pollute indoor air. Certified to contribute to cleaner indoor air, you can feel good about putting this mattress in your child’s nursery. Designed to fit standard full-size cribs and toddler beds.