The 6-Inch Dual-Comfort Baby Crib and Toddler Mattress is designed to grow with your baby. It’s smooth, firm side is designed specifically to keep your infant safe. When your baby grows, you can flip the mattress to its textured side, which is recommended for the toddler stage. This mattress features a removable outer cover. Made with an ultra-soft viscose-polyester blend, the cover is water-resistant and hand washable. The Dual-Comfort 6-Inch Foam Crib and Toddler Mattress is designed to fit any standard full-size crib and toddler bed.