Is it a bed? A chair? This versatile piece is whichever you want it to be! Use it as a bed with side rails, then convert it to a chair when your child graduates to a bigger bed. Or, you might want to use it as a chair that can be unfolded as extra space for sleepovers. It's functional, it's fun, and you'll get tons of use out of it either way. (Fits any standard size crib mattress; chair pad included.)