Ok then, I am really confused here, 2 things really -
I have some velour quilted 2.5 Tog Grobags and some with cottony outers, that also claim to be 2.5 togs. I know that they are made to meet a British Standard, but I can't get my head round the idea that the thick velour ones are the same warmth as the thinner cottony ones.
Secondly - My winter duvet is 8 togs! How come it is OK for DS to sleep in 2.5 Tog Growbags? I am terrified of overheating him, but it's really cold at night at the moment! I have a room thermometer in his room and dress him according to the Grobag guidelines, but it seems odd that I sleep under 8 togs (and with somebody else to cuddle up to), and he under 2.5!