Amazon.com: The Shrunks Toddler Travel Bed Portable Inflatable Air Mattress Bed for Travel, Camp or Home Use, Kids Size with Security Rails 60 x 37 x 9 inches -: Baby This item: Dream On Me 4″ Full Size Foam Crib and Toddler Bed Mattress (Packaging may vary) $40.36 The Graco Premium Foam Crib and Toddler Bed Mattress (patent pending) is the perfect choice for your baby’s crib. Designed to fit any standard/full-size crib and toddler bed, this mattress ships compressed in a lightweight, eco-friendly box that makes it super-easy for anyone to carry. A typical single, twin or bunk mattresses are 38” width x 75” length.You’d be hard-pressed to find a bed that is any smaller than this one, other than that of a toddler bed or crib. Typically this is ideal for children who have outgrown cribs and toddler beds, and who are now ready to graduate to a larger mattress.. Additionally, for those who sleep in cramped quarters, who have small A bed is a piece of furniture which is used as a place to sleep or relax.. Most modern beds consist of a soft, cushioned mattress on a bed frame, the mattress resting either on a solid base, often wood slats, or a sprung base.Many beds include a box spring inner-sprung base, which is a large mattress-sized box containing wood and springs that provide additional support and suspension for the .