Because I don't get on with sleeping bags and have converted over to quilts. Today to shed a bit of wait and have another option for the hammock I cut my old cumulus 350 minus 6 sleeping bag down to make it a half bag to use with a down jacket come the spring. Quite chuffed to feel it's thickness over my 250 Cumulus quilt but weighed in a lot less. I took out the zip fitted the hoods elastic cord at waist height and it came in at just 377grams in a tiny stuff sack.
Don’t expect a great night of sleep while camping — expect a series of naps.