I think this cot bed is really what every parent should have given its simple yet beautiful white design and flexibility across various child ages. Indeed, the mattress base is adjustable and can be set on 3 different levels (more or less deep with a barrier). Top position is perfect from birth until 6 months old and we don't hurt our back by putting the baby in/out of bed. And there is also the option to remove barriers and convert it into a small single bed for a kid up to 4 years old. It is super handy with an underneath drawer to store extra blankets and toys. It was easy to build and I can't wait to start using it