OK . . . What does a 10/30F temp spec mean?
JAMES T Not sure if you received an answer yet, but that would be its temp. rating. Depending on whether you are a cold sleeper or a hot sleeper, the rating can be a bit deceiving. If you're a cold sleeper and need a lot of cover when you sleep, you should add about 15-20 degrees to the rating (i.e. a 30 degree bag would actually be a 45-50 degree bag).