Down bag: draft tube issue

That is some absolutely amazing work. I wish could make something near as nice as that. That sleeping bag looks nicer than the Mountain Hardware one in my closet.

Nice job!

What happens if you don't zip the inner zip, does the down tend to fill in that space or is there an air gap? Maybe you don't really need that zipper?

I like the central zip. I do that on my bags. Makes it easy to vent when your sleeping bag is warmer than necesary, like at the beginning of the night. I don't know why nobody else does that.

Nice work Ivo. Man, that thing is chock full of puffy goodness.

Ryan