Nice, well made bed. Took about an hour for my husband to put together. It is rather wide 90cm, so be aware if room is small , but because of that it feels like an adult could sleep on it comfortably too. Top mattress could be up to 20-22 cm thick, bottom mattress max 15cm (that is from slat to under bed and can just about able to close it. ) Would Definately recommend.