I bought this to use inside my BA Lost Ranger for colder than expected temps. I find the LR only keeps me comfortably warm (not waking up chilled) down to around freezing. I slept out the other night at 14deg with both bags and was totally warm. It fits in a small OR compression stuff sack, 6x10" compressed. I am camping off my dual-sport bike.
This review was written in the old system and had content requirements that are different than reviews written today.