The North Face Aleutian Sleeping Bag retains heat like you’d expect a bag named for Alaskan volcanic islands would. The North Face used an overlapping shingle construction that, paired with Heatshield Optimal Technology SL (durable, lightweight synthetic insulation), helps you stay warm as lava in cold, damp weather. The North Face gave this bag’s hood a zipper, so you can cover your face against a cold wind and vent when you get hot. The ergonomically designed footbox gives your feet some wiggle room, and an external shoulder-level pocket holds your thermometer so you can see exactly how cold the world is outside your toasty Aleutian bag.
Tech Specs:

* Material: [Shell & Lining] 100% Enduralite (silky polyester taffeta)
* Insulation: Heatshield Optimal Technology SL (hollow-core poly fibers)
* Shape: Mummy
* Draft Collar: Yes
* Max User Height: [Regular] 6ft (183cm); [Long] 6ft 6in (198cm)
* Shoulder / Hip / Foot Circumference: [Regular] 62 / 58 / 40in (157 / 147 / 102cm); [Long] 64 / 60 / 40in (64 / 60 / 40cm)
* Stuff Size: 8 x 17in (20 x 43cm)
* Stuff or Storage Sack: Stuff
* Temperature Rating Comfort 1 to -5c
* Weight: [Regular] 3lb 6oz (1545g); [Long] 3lb 10oz (1650g)
* Recommended Use: Spring-to-Autumn, moderate-to-cold-weather camping
* Manufacturer Warranty: Lifetime