Designed with smaller homes and apartments in mind, the The Dream On Me 2-In-1 Breathable Two-Sided 3" Portable Crib Mattress is compact in size but packs a punch with its handy features. Designed to fit standard size portable/mini cribs, this made-in-the-USA mattress is Greenguard Gold certified and meets/exceeds all flammability (16 CFR 1632/1633) standards. The Dream On Me 2-In-1 Breathable Two-Sided 3" Portable Crib Mattress comes with a firm 3” fiber core that is wrapped in two CertiPUR-US certified layers, offering the perfect blend of support and comfort. It features a reversible design: a white infant side covered with breath flow material and a green toddler side with a waterproof cover and lockstitch binding that keeps out liquids and stains, creating hygienic & safe sleeping conditions. The Dream On Me 2-In-1 Breathable Two-Sided 3" Portable Crib Mattress guarantees the freshest sleeping surface thanks to its unique breath flow as well as the reinforced mattress cover. It weighs 8 Lbs. Safety Advice: Please ensure mattress covers or fitted sheets are not too tight or loose over a crib mattress to practice safe sleeping. Flip/rotate mattress every 2-3 months Designed to fit standard size portable/mini cribs.