Second, the Vietnam jungle hammock is confining and doesn't really protect you from the elements. Wind blown rain easily gets inside. Some versions also have mosquito netting that will keep the bigger bugs out, but your bare arm against the netting is still somehow vulnerable. And finally, none of these old style hammocks can be used as a tent without a lot of modification, and the quality of construction is variable. But if you can stretch your budget, there is a better solution.
All specs are subject to change and are approximate.
Check each manufacturer's web site for the latest information. All three of these manufacturers were asked to provide evaluation units to WaterTribe. Only Lawson did so. For my purposes, the bivy tent mode and spreader bars were crucial selection criteria. Your needs may lead you to a different conclusion.