I made mine with the bottom layer 1/2" wider than the top layer. I have been in the hammock without a pad and up to 1 1/2" thermorest self inflating pad. There is tension on both layers of the hammock in any of these combinations. I'm sure it varies between the top and bottom layer depending on the pad used. I used some WM $1 fabric that is about 1.4 oz per yard for the hammock.
The thicker pad did reduce the squeeze.
Bookmarks