Here is my dilemma I have a zip less SD moonlight bag (1# 6oz), very light but useless unless near its 30f temp rating, too warm. Anyway I am going to add a zipper to the bag. I know more weight, but makes the bag more useful.
So I have two questions:
1) Draft tube?
2) length of zipper? I was thinking to my waist, or would to my kness be better.
Thnaks fro all replys