A refresh to an industry leader, featuring 800 fill ProDown insulation and a shell made with recycled materials, the North Face One Bag Interchangeable 3-in-1 Sleep System provides the ultimate in comfort for any conditions, whether you’re a beginner looking for flexibility or an experienced camper who’ll be in a range of climates. (5°F/-15°C). Depending on the weather, you can zip different sections of this down insulation bag together to achieve your desired temperature rating. Additionally, parts we are not using double as a wrap-around blanket or pillow so that we are never carrying dead weight.

Top layer features synthetic insulation rated at 40°F (4°C) for versatile use in warmer weather
Mid layer features 800 fill recycled down rated at 20°F (-7°C) for high-level performance in adverse conditions
The two layers can be paired to get a 5°F (-15°C) bag for maximum versatility
Down layer can be used as a stand-alone quilt for campsite lounging
Large, fitted hood accommodates pillows and arms-over-the-head sleepers
Anticompression layer on back is composed of synthetic insulation
Durable YKK zipper
Vaulted footbox
Included compression sack is fleece on the inside so you can use it as a camp pillow

The North Face One Bag Interchangeable 3:1 Down Mummy Sleeping Bag (5°F/-15°C)