MAMAZING Aerobase Baby Crib and Toddler Mattress 52" L x 28" W, 2-Stage Breathable Mattress, Non-Toxic, Waterproof Liner, Machine-Washable Cover, Fits Standard Baby Crib & Toddler Bed

MAMAZING BABY CRIB MATTRESS MATRIAL: 100% Polyester, Inner: Polyurethane Foam & air fiber, helping prevent overheating and providing a safer, more comfortable sleep for your little one. | GREENGUARD GOLD, CertiPUR-US & SGS Certified,OEKO-TEX STANDARD 100: Our crib mattress meets rigorous international standards for content, emissions, and durability ensuring its made without harmful chemicals or materials. Independently tested and certified by SGS for safety and quality, its soft, skin-friendly, and gentle on your babys delicate skin, helping create a cleaner, healthier sleep environment. | HIGHLY BREATHABLE FOR SAFER SLEEP: Our breathable crib mattress is thoughtfully designed with your babys safety and comfort in mind. The washable woven core allows air to flow freely, creating a truly breathable sleep surface that helps prevent overheating. Rest easy knowing your little one sleeps safely and comfortably, night after night. | EAST TO CLEAN: The ultra-soft, machine-washable cover effortlessly handles nighttime messes. Its removable, machine-washable design makes cleanup simple. The inner core is also easy to clean and can be wiped down with ease, ensuring a fresh, cozy sleep for your little one every night. | FITS ALL STANDARD FULL-SIZE BABY CRIBS & TODDLER BEDS: Mattress dimensions: 52"L 28"W 3.74"TH.Our mattress is designed to fit any standard full-size baby crib or toddler bed (Interior Dimensions 52"L 28"W). As the mattress is vacuum-compressed for shipping, please allow up to 72 hours for it to fully expand to its intended 4" height.