Just made 2 ultralight hammocks.
Both are 1.1m x 2.25m,non structural channel,gathered end hammocks with whoopie slings larks headed directly onto body under the knot.
1 using ripstop nylon and one using polyester taffeta.
The taffeta one has an integral storage pouch and darts head and foot for a zip in bug mesh in future but is still lighter than the ripstop nylon version.
Both feel strong but are not as comfy as a wider version.
The taffeta feels nicer on the skin.
I have no scales so no exact weights on these 2 but are very light.