Breathable Mattress For Crib - Soft breathable knit cover is gentle on baby's skin, zips off for easy washing, and stays cool and quiet. Waterproof PVC-free backing protects the crib mattress from leaks, moisture, and everyday messes. 2 Stage Dual Firmness Design - Features a firmer side for infants, as recommended by pediatricians, and a softer toddler side for comfort. Dual firmness helps support safe sleep and grows with your baby from newborn to toddler years. Greenguard Gold Certified & Non Toxic - Greenguard Gold certified for low chemical emissions to support cleaner air. Made without harmful chemicals, polyurethane foam, memory foam, latex, or springs for a safer and healthier sleep surface. Sustainable Full Size Crib Mattress - Durable full-size crib mattress made with eco-friendly materials tested for long-lasting firmness and support. Responsibly manufactured in the USA using sustainable practices with your baby’s safety in mind. Fits Standard Cribs & Toddler Beds - Snugly fits standard size baby cribs and toddler beds with square corners for a secure fit. Ultra lightweight design makes sheet changes easy while maintaining full support and safety for your growing child.