Best Cold-Weather Mummy · 1 of 4
Coleman North Rim 0°F Sleeping Bag

- 0F rated mummy
- Thermolock zipper draft tube
- Adjustable hood
Our take
The coldest-rated mummy here, for early spring and late fall hikes.
Why it made the shortlist
The Coleman North Rim is a mummy rated to 0F with an adjustable hood and a Thermolock draft tube running the length of the zipper. It is cut for campers up to 6 ft 2 in and uses hollow polyester insulation.
Against the TETON Trailhead it states a colder rating and adds a longer-lasting draft barrier, so it holds up for later-season trips. The two mummies share a similar shape, and this one carries the colder figure.
It suits backpackers who start trips in early spring or late fall. The adjustable hood lets you seal in heat or vent when it warms up.
What works
- Mummy shape holds heat close
- Draft tube blocks zipper leaks
- Fits sleepers up to 6 ft 2 in
- Hood adjusts for warmth or venting
Watch out for
- Mummy cut feels snug for restless sleepers
- Shorter than the oversize rectangular bags
- The catch
- The 0F figure is a limit-style number, so expect comfortable sleep well above it.





