Why can't you use a duvet and sleeping bag together for a 1yo

[yellowflowers]

Dd likes to be cosy and is strong enough to kick covers off. Why not both?

She'd melt with the heat wouldn't she?

Overheating

Sorry to hijack but need to move from a grobag as DS hates them now. He is 18 months old, I can use a cot duvet now can't I? He can kick them off if gets too hot I guess.

duvets are ok from 1 year. You should not use a duvet and sleeping bag together as there is a risk of overheating - use one or the other not both