My dd is 20mths and has been in grobags since she was about 4mths. I'm expecting to put her into a bed sometime over the next year but wondered whether I should get her used to a duvet whilst she is still in a cot, or keep her in grobags when she is in a cot (at least she can't climb out wearing them) and then she'll have a duvet when she goes into a grown up bed, or even have her in grobags when she's in a bed - although that could be difficult as I doubt she could get back in if she got out. I need to decide soon as she's growing out of her grobags so either I need to buy the next size up grobag or a cot duvet. Most friends have said keep her in a cot as long as possible as its easier. I'd rather she had to get used to a duvet in the summer as at least if she kicks it off she won't get too cold. What did everyone else do?