USA-MADE EXTRA FIRM COILS: Baby crib mattress consists of 150 durable, posture-supportive coils made in the USA. Resilient coils help create a firm foundation while the steel edges support your little one throughout the entire crib mattress. WATERPROOF CRIB MATTRESS: 100% waterproof and stain-resistant cover wipes clean with a damp cloth. Airy cushioning cradles infants and toddlers for years. Airy layers are made in America from air-quality tested cushioning. NON-TOXIC FOR BABIES: Baby bed mattress is certified GREENGUARD GOLD (which tests for more than 10,000 chemicals and VOC indoor pollutants), ASTM, and CPSIA. Also passes CHCC regulations and is free of harsh chemicals and toxic fire retardants AMERICAS LEADING BRAND: More babies sleep on a Sealy than any other crib mattress. Our American-made designs are durably constructed and quality-tested to meet infant safety standards and provide the best for your baby. PERFECT FIT: Full size crib mattress fits into standard cribs or toddler beds (measures 51.7 x 27.3 x 5.25). Fits standard crib mattress sheets and is lightweight for changing baby's bedding. Use as an infant crib mattress or toddler crib mattress.