I have a Exped synmat 9 (width 26 in length 77 inch 3in height). Can it be used in a Hennessy Hammock comfortably or are sleeping pads a bad idea with hammocks?
Last night I used my Exped Downmat 9 LW (26" wide) in my HH and it worked great. It dropped down to 36 degrees, and I was almost too warm at times and had to open up my sleeping bag.
I used a 20 degree down bag and wore a light primaloft sweater, with fleece pants and a hat.
It helps to only partially inflate the mat, and I had no problems with the mat shifting too much.
I guess the only downside is that they are a bit heavy, however, they are comfortable and warm.
Goody5534, you should put this post in the general "Bottom Insulation" section. "HammockGear" is actually a Brand Name for a cottage gear vendor (that makes outstanding stuff!)
As far as your post, the Exped will work fine, but let out about 1/3 of the air or it will not conform to the hammock. Better if you have a double bottom layered hammock, because you can put the pad between the layers and it won't move out from under you when you shift at night.