Warm side cold side

[rjcress]

What if I made a double layer with a permanent under quilt only attached to the bottom layer? Then if i wanted to i could turn it inside out (so the down is in between the layers) which would compress all that down, which would take most of it's insulating properties away.

Right?

Sounds like an expensive experiment, but I suppose it would work as you described. It would likely not work as well in "cool mode" as a detachable underquilt, in that the compressed down configuration would still be insulating more that just removing the underquilt all together.

While I admire your creativity, I can't think of a way to do what you are trying that would be work as well as having an underquilt that you can remove for full-out cool mode, or adjust to fit with gaps for partial cool mode.

[Roadtorque]

how would that be any easier/cheaper than buying a UQ. The disadvantage is you are always carrying the extra weight of a UQ even if you dont need it. Furthermore, you can only build your hammock for one temp range.

[TheCityFish]

It's just an idea.

[Trout]

If you found a reflective material similar to an emergency blanket, but mroe durable, you could attach it to one side of a hammock. In the cold weather, turn it to the inside to reflect heat. In the summer, turn it on the outside; however, you'd need to be able to "release" the reflective material from being so close to your body, so your body could breathe and not get sweaty and hot.