I slept in a 2gosystems bivvy last week on a wet 10deg night and was warm enough with a light fleece jumper and beanie. That was with a thermarest ccf mat though.gonetroppo wrote:Does anyone use these bivvy's as a summer sleeping bag and have any feedback on its effectiveness? considering using it stand alone in a hammock ideally down to the manufactures claimed 10 degrees, but concerned about loss through my back without a mat, and if that rating is comfort or extreme.
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