The Leander bed grows with your child. The bed is built to last ? in more ways than one. When you buy the Leander bed you only need to invest in a bed once. The bed grows with your child, from infancy to early tweens (8-9 years old). The unit has four stages: crib (with 2 mattress heights), daybed, transition bed and junior bed. All needed conversion components are included with the crib packaging. (Mattress sold separately)