You obviuosly ask questions instigating comments Aceatec <img src="/forums/images/graemlins/confused.gif" alt="" />

First off post your location under your avatar name so folks know where you are hiking.

Second, every person has a different metabolism, and within that every person then has multiple metabolisms depending upon their fitness level.

Third, if you are using a down bag in anything but dry climate condtions then it will quicklly lose loft afield and insulating value.

Fourth, if you are putting the bag inside your pack; then the packed size is important.

Fifth, If you have an external frame pack then the answer is also skewed.

Need I go on <img src="/forums/images/graemlins/confused.gif" alt="" /> ask questions with the necessary data in them if you want a relative answer, and not just troll folks along <img src="/forums/images/graemlins/tongue.gif" alt="" />