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>I am going to go with the HH Supershelter and just use a plain sleeping bag inside - I hope that will do the trick in the temps I'll be in (around 35F/0C)
A Hennessy hammock used with the Hennessy under-pad and under-cover insulation system and a sleeping bag should be comfortable at those temps. I've used the HH SuperShelter insulation system with a JRB Nest down top-quilt and insulated clothing to +25F. You might consider zipping the sleeping bag mostly open, leaving just a foot pocket, and using it quilt-style (tuck the extra underneath you). It's no fun trying to crawl into a sleeping bag inside a hammock.
If you just have a Hennessy hammock (without the under-pad/under-cover) then I suspect you will be very cold. Bottom insulation of some kind is necessary in a hammock in cold (or even cool) weather--a typical sleeping bag won't cut it. (I was shivery in a +15F synthetic bag at +40F; froze my butt in a +10F down bag at +30F; YMMV.) Don't bother with a space blanket--it won't help. The cheapest/lightest solution is a Gossamer Gear ThinLight 1/8" Evazote sleeping pad (2.5 oz; wide: 3.2 oz; 1/4" wide/long: 5.1 oz). That, with a reasonable sleeping bag, should be good for your temp range. You can put the sleeping pad inside the hammock, but try it before your trip. You have to be a contortionist to get a sleeping pad nicely arranged underneath you while inside a sleeping bag in a Hennessy hammock. I flipped my hammock completely upside down once! (Fortunately, the Hennessy bug mesh is very sturdy.) A much friendlier, and more generally useful, alternative is to suspend a sleeping pad or fleece blanket under the hammock with a Jacks R Better Weather Shield bottom cover. (The web page says "out of stock" but that only refers to the top cover at present.) You can also stuff extra clothing between the pad and the bottom cover to increase insulation (not on top of the pad, or the clothing may gain moisture). The Weather Shield bottom cover is great for suspending a JRB Nest, No Sniveler, or any other lightweight quilt. (A synthetic or down comforter can easily be found for $40-$50, but it will be much heavier than a JRB quilt.)
Edited by Otter on 03/18/2007 10:21:11 MDT.
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