no prob, noopi 
har? long johns ah? hmm.....i've never had any need for them.
canadian winters are harsh but unless one is outdoors a lot,
usually a fleece pants or jeans are good enough.
sorry hor, like u, i've only heard of woollen ones. but my friends
bought silk comforters from china and said they are really good.
lightweight and keep really warm.
i guess if you can go to a silkworm farm or silk factory, you may
find them. good luck.
