I am at my brothers in Carrboro, N.C. and just set up my hammock before dark. Just doing some testing tonight to see how warm I stay when it gets down to the forcast 26 F. I am trying insultex and poncho liner quilts with my new hammock sock. If it isn't warm enough I will just come inside and snuggle in down. I have another outfit that is all down to try tomorrow night.
I made the sock from 1.3 and 1.9 ripstop nylon with entry from the bottom. Just guesses on the weight of the nylon.