Ensure your baby stays safe and smiling on overnight trips thanks to the 2-in-1 Breathable 3 in. Two-Sided Mini/Portable Crib Mattress by Dream on Me. This three-inch thick mattress is sized to fit a 2x3 foot Mini/Portable Crib and features a machine-washable cover. The mattress has plush, foam-padded spring coils to support and soothe your sleepy child. All of the materials used to construct this Mini/Portable Crib mattress are hypoallergenic. The cover is also antibacterial with a mildew- and mold-resistant design.