Greenguard Gold Certified & Non-Toxic Safety - Greenguard Gold certified for low chemical emissions, tested for 10,000+ VOCs. CPSIA and ASTM certified for safety, ensuring a healthier, non-toxic sleeping environment for your baby. Breathable & Washable Zip Knit Cover Design - Soft, breathable zip knit cover adds airflow and comfort. PVC-free waterproof barrier protects from leaks and odors. Fully removable and machine washable for easy cleaning. American Made Firmness & Dual-Stage Support - Dual-sided Omnipedic core offers firm infant support and softer toddler comfort. Airy construction is safer and more breathable than standard foam. Firmness tested for both sides. Sustainable & Lightweight Eco-Friendly Build - Made in the USA with non-toxic, earth-friendlier materials. Durable, high-quality fiber core is safe and supportive. Lightweight 8 lb design makes sheet changes quick and easy. Trusted Brand With Lifetime Warranty Quality - Sealy is America’s #1 crib mattress brand by sales. Lifetime warranty on materials and workmanship. Square corners ensure a snug fit in standard cribs for added sleep safety.