The CoZee XL junior bed and sofa expansion pack in oak and liquorice offers the functionality to convert the previous cot mode into a toddler bed that can be used up until the age of four, and ultimately into a sofa, which makes for a fun addition to your child's bedroom. , , NOTE: This is an expansion pack. The main Crib/Cot pack is required to assemble the Junior Bed and Sofa. Mattress not included. Suitable mattress dimensions: 120cm x 60cm x 10cm, same as the previous Cot Mode.