Quote:
These jackets have less down in them than the draft tube in my winter bag and people have the idea that they will be warm. WHY? <img src="/forums/images/graemlins/blush.gif" alt="" />


Agreed, I've often wondered if there's a point past which a very light down jacket will actually be colder than an equivalent weight of fleece.

That said, I have a 800 FP Japanese sleeping bag that weighs just under 500 grams and it is WARM.