The best feature of the bag is its roominess. Otherwise it was a disappointing experience. Took this bag camping several times were temps dropped into only the low 40's at night and was cold all night long. Even when using it in a cabin that was off the ground, needed to put layers of clothing on in the middle of the night to stay warm while temperatures where only in the 40's at night. The matching big agnes pad did not provide the needed insulation either. Unfortunately will have to return both-bag and pad.