I used this bag in summer time conditions. Comfort level of this bag is about12c. You'll freeze in it in any cooler conditions. Great on warm nights though.

Marketed as a three season bag but definitley a summer bag only , unless you live in the tropics , paid over $100 when I bought it but they now retail for less than half that . Zipper will not stay up and the bag is pretty small compared to others I have got .
Packs down small
Not a three season , small size , wont keep you warm in anything but a warm Summers night