I got this bag after purchasing a different Sierra Designs bag. Don't remember which one it was but it had a significantly higher fill count but this one is SO much more comfortable. I used it while camping on the beach in 50 degree weather and it was great to unzip and use as a blanket. The only problem was that it didn't unzip all the way so I couldn't completely open it up for the two of us, but I did know that would be the case beforehand. It's a great bag and I am excited to use it for backpacking this summer!