America's most trusted mattress brand Sealy offers some of the best baby crib mattresses made with firm, comfortable and safety-tested materials. The Sealy Butterfly 2-Stage Antibacterial Crib Mattress and Toddler Mattress is a 2-in-1 mattress for cribs that ships small, butterflies out and fits any crib and toddler bed perfectly. The 2-stages of foam offer a high-density posture supportive firm side for infants and a softer soy-enhanced comfort foam for toddlers. Sealy's family-friendly foams are all CertiPUR-US Certified for air quality and durability. They are made without ozone depleters, formaldehyde, or volatile chemicals. Better yet, all Sealy crib mattresses are GREENGUARD GOLD Air Quality Certified for a healthier indoor environment and meet Chemicals of High Concern to Children regulations, which gives you peace of mind baby can breathe easily without harsh emissions. The zip-on waterproof cover also comes with baby's health in mind. Easily wipes clean with a damp cloth and does not trap moisture or require special cleaning. Exclsuive EPA-registered antibacterial surface was tested in a laboratory to help ensure harsh bacteria would not spread across baby's crib mattress surface. Sealy crib mattresses are designed to fit all USA standard full size cribs and toddler beds measuring 52x28 inches for a snug fit. Proudly made in the USA with U.S. and globally sourced materials. Comes with a 7-year warranty on workmanship and materials.