Anyway after reading this kind of post for years - ha ha thanks - I need to replace my Warmlight Down Airmattress (DAM) with something more durable, inflateable, insulated for winter use, and useful down to zero F. I have an insulated Big Agnes pad and I consider it totally inadequate for winter. I really want to stay under 3 pounds, under 2 better. Oh I have a sort of messed up back and I really liked the 3" thick DAM. Oh yes I always use one of the fan fold closed cell pads under it for a backup in case of an air leak.
Reccomendations?
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These are my own opinions based on wisdom earned through many wrong decisions. Your mileage may vary.