Big Agnes Mystic UL 15 Sleeping Bag

The Big Agnes Mystic UL 15 Sleeping Bag is one of the lightest bags offered by BA, and with a 15-degree temperature rating, it's perhaps the most versatile. This bag really hits a sweet spot with a practical and comfortable feature set. It provides excellent low-bulk warmth thanks to the 850-fill down insulation, packs up tiny, and has an integrated sleep pad to provide a comfortable night's sleep no matter how much tossing and turning you do. For long treks and fast-and-light trips, the Mystic UL is as good of a bag as you can find anywhere.