Hi, our daughter has just moved to a toddler bed and is very happy with her new duvet. We bought one from John Lewis that adjusts to body temperature, that way the child doesn't get too hot and we use a stay-on duvet by the same company that does gro-bags. the duvet is zipped to the sheet so that way even if she tosses and turns during the night she never gets out of it but still has plenty of room. It works for her as she's been sleeping better than ever. a little pricey ,though. However, you can get a good deal on the internet. Hope this helps.