IoLine crib before, but according to the Kalon site, the Io Crib is "a fresh take" on their classic piece. Check out what's different: You'll find the main difference between the two cribs in the sides. The original IoLine has a fold-down top, while the Io has a fixed side but a lower height. The Io crib has two adjustable heights, instead of the traditional three in the IoLine. Like its predecessor, the Io crib converts seamlessly into a toddler bed and is made with sustainable bamboo and non-toxic finishes. Available for $1595 from Kalon Studios.