Thanks for your great article. I’m in the process of buying a new bag/quilt and not quiet sure with what temperature rating I should go. I’m looking for a 3-season quilt which I can take up to the north (Alaska, Sweden) during summer. My first idea was, that I could go with a 30F quilt since I carry a light down jacket and a dry pair of woollen socks anyway and being able to push that rating near 20F. But I have some concerns and I’m not quiet sure if this will work as expected. What is you opinion on this? I see that you use the Burrow 40 yourself, are you running a similar approach? How far down do you push the temperature limits of this bag?