DS has been in a toddler bed for a few months and has just started refusing grobags (he's 2.9). I've decided to try him with a pillow and duvet but have no idea what to go for. Should it be a man-made fibre type? Feather? Silk? And what tog is best for toddlers? Any advice appreciated! I should mention I'm going straight to single duvet size rather than toddler bed size so want something which will last reasonably well.
TIA