Furnishiaa 6″ Dual Comfort Crib & Toddler Mattress features a reversible design with a firm infant side and a softer toddler side. It comes with a water-resistant, machine-washable cover and is GREENGUARD Gold and CertiPUR-US certified for safe, healthy sleep. Designed to fit standard cribs and toddler beds, it arrives fully expanded and ready to use.