The Coleby Mini Cot Bed is a stylish, neutral design that will sit well in any nursery and although it’s a mini model, this cot bed will last from birth to approximately 4 years. The Mini Cot Bed comes with three height positions. To save your back in the early days, before bubba can move around, you can start with the mattress at the highest level. However, once that time comes and to deter little climbers, you have a choice of a further two lower positions.