Convertible beds The same bed from 0 to 7! A convertible bed grows with your children, from 0 to 7, depending on the model. Of course, the initial investment is a bit more, but you will keep them for many years to come. The Oeuf NYC ‘‘Classic’’, the Nobodinoz ‘‘Pure’’ and the Quax ‘‘Flow’’ cots all look just like normal, ‘big kid’ beds once they’re assembled. QUAX “Hai No Ki” convertible cot bed, 70 × 140 cm, height-adjustable 40