How old was your child when they outgrew their cot, especially if you had the smaller size that takes a 120 x60cm mattress? My DD is only 18 months but already looking quite big in it and moves around a lot at night, sometimes getting stuck sideways and waking up a lot during the night. I wonder if she would like a bigger bed but I don’t think she’s anywhere near ready to move into a normal bed yet. The cot is supposed to last up to age 4 (wouldn’t expect to use it that long of course!) but I don’t see it lasting much longer.