The Alaska 450 is a mummy-style backpacking sleeping bag rated to a comfort temperature of 0 F (-18 C) and an extreme limit of -25.6 F (-32 C), engineered for cold-weather trekkers, winter campers and mountaineers who need dependable warmth in genuinely harsh conditions. Its triple-layer HollowCore 7 insulation, built from three 150 g/m2 batts, traps heat efficiently while the anatomical hood and draft collar seal warmth around your head and shoulders.
Crafted by Terra Incognita, a European outdoor brand with over 18 years of expedition experience and its own gear production, the Alaska pairs a 210T ripstop polyester shell with a CIRE water-repellent treatment and a soft 280T micro polyester lining. Weighing 4.70 to 4.98 lbs, this cold-weather sleeping bag balances serious insulation with a packed size of 11.8 by 17.7 inches for backcountry travel.
Who is the Alaska 450 sleeping bag built for?
The Alaska 450 is made for winter backpackers, cold-season mountaineers and anyone camping when temperatures dip toward and below zero Fahrenheit. With a comfort rating of 0 F, it keeps most sleepers warm through hard frosts, while the extreme limit down to -25.6 F provides a survival margin for unexpected cold snaps at altitude or in deep winter conditions.
What keeps the Alaska 450 sleeping bag warm?
Warmth comes from HollowCore 7, a synthetic fill layered as three 150 g/m2 sheets that create stable loft and resist compressing into cold spots. The 210T ripstop polyester shell carries a CIRE treatment that beads off condensation and light moisture, and the 280T micro polyester lining stays soft against the skin. A draft collar, full draft tube and hooded mummy cut work together to lock heat inside.
What features help on cold nights in the Alaska 450?
On a cold night the dual-slider zipper lets you vent at the feet or fully seal the bag, and the GLOW ZIP PULL is easy to find in the dark. Cinch the anatomical hood down to a small breathing hole in the worst cold, and let the draft collar trap the warm air you generate. Its 11.8 by 17.7 inch packed size stows in a winter pack alongside the rest of your kit.
Specifications
| Characteristic | Alaska 450 |
|---|---|
| Temperature, °C min comfort max |
-32 -18 +10 |
| Temperature, °F min comfort max |
-25.6 0 50 |
| Length × Width (EU) | 220 × 80/50 cm |
| Length × Width (US) | 86.6 × 31.5/19.7 in |
| Min Weight (EU) | 2.13 kg |
| Min Weight (US) | 4.70 lbs |
| Max Weight (EU) | 2.26 kg |
| Max Weight (US) | 4.98 lbs |
| Packed Size (EU) | ∅30 × 45 cm |
| Packed Size (US) | ∅11.8 × 17.7 in |
| Insulation | HollowCore 7 (3 × 150 g/m²) |
| Shell Material | 210T Ripstop Polyester with CIRE treatment |
| Lining Material | 280T Micro Polyester |
| Zip Options | Left (L) or Right (R) |
| Colors Available | Green/Grey, Blue/Grey |
| Shape | Mummy with Anatomical Hood |
| Season Rating | 3-Season |
| Special Features | GLOW ZIP PULL, Anti-Snag System, Draft Collar |
| Includes | Sleeping Bag, Compression Stuff Sack |
| Product Type | Technical Sleeping Bag |
Key features
- Comfort rating of 0 F (-18 C) with an extreme limit of -25.6 F (-32 C) for confident cold-weather nights
- Triple-layer HollowCore 7 insulation (three 150 g/m2 batts) builds deep, heat-trapping loft
- Anatomical mummy hood cinches around your head to stop heat escaping where it matters most
- Insulated draft collar seals warm air at the shoulders and blocks cold drafts from creeping in
- Full-length draft tube runs behind the zipper so no cold line forms along the closure
- 210T ripstop polyester shell with CIRE treatment sheds light moisture and resists tearing
- Soft 280T micro polyester lining feels comfortable against skin through long winter nights
- Dual-slider zipper with a GLOW ZIP PULL and anti-snag protection is easy to work in the dark
Who makes it
Terra Incognita has spent more than 18 years running trips and expeditions and manufacturing its own outdoor gear, so this model comes off the brand's own production line rather than a rebadged catalog. Every item carries a 12-month manufacturer warranty, and the design is tested in the field by the people who guide the trips.
Alaska 450 FAQ
How cold can the Alaska 450 sleeping bag handle?
The Alaska 450 has a comfort rating of 0 F (-18 C) and an extreme limit of -25.6 F (-32 C). That means it keeps most sleepers comfortable through hard frost, with additional survival margin for unexpected deep-cold conditions in winter or at altitude.
Is this a good sleeping bag for winter camping?
Yes, it is purpose-built for winter and cold-weather camping. The triple-layer HollowCore 7 insulation, anatomical hood, draft collar and full-length draft tube all work to hold heat at temperatures where lighter 3-season bags would leave you cold.
How much does the Alaska 450 weigh and pack down to?
It weighs between 4.70 and 4.98 lbs (2.13 to 2.26 kg) and packs to roughly 11.8 by 17.7 inches. That is a reasonable weight for the warmth it delivers, letting winter backpackers carry it into the backcountry rather than only using it at a drive-up camp.
Does the Alaska sleeping bag have a hood and draft collar?
Yes, it features an anatomical mummy hood plus an insulated draft collar at the shoulders. The hood cinches around your head to prevent heat loss, and the collar seals warm air inside the bag so cold drafts cannot pull it out during the night.
What is the shell made of and is it water resistant?
The shell is 210T ripstop polyester finished with a CIRE water-repellent treatment. The CIRE coating helps light moisture and tent condensation bead off the surface, while the ripstop weave adds tear resistance for rugged winter use.
Related gear
See more in Sleeping Bags, Sleeping Gear for Camper, Picnic Mat, Camping Pillow 50x30.
The Alaska 450 is a mummy-style backpacking sleeping bag rated to a comfort temperature of 0 F (-18 C) and an extreme limit of -25.6 F (-32 C), engineered for cold-weather trekkers, winter campers and mountaineers who need dependable warmth in genuinely harsh conditions. Its triple-layer HollowCore 7 insulation, built from three 150 g/m2 batts, traps heat efficiently while the anatomical hood and draft collar seal warmth around your head and shoulders.
Crafted by Terra Incognita, a European outdoor brand with over 18 years of expedition experience and its own gear production, the Alaska pairs a 210T ripstop polyester shell with a CIRE water-repellent treatment and a soft 280T micro polyester lining. Weighing 4.70 to 4.98 lbs, this cold-weather sleeping bag balances serious insulation with a packed size of 11.8 by 17.7 inches for backcountry travel.
Who is the Alaska 450 sleeping bag built for?
The Alaska 450 is made for winter backpackers, cold-season mountaineers and anyone camping when temperatures dip toward and below zero Fahrenheit. With a comfort rating of 0 F, it keeps most sleepers warm through hard frosts, while the extreme limit down to -25.6 F provides a survival margin for unexpected cold snaps at altitude or in deep winter conditions.
What keeps the Alaska 450 sleeping bag warm?
Warmth comes from HollowCore 7, a synthetic fill layered as three 150 g/m2 sheets that create stable loft and resist compressing into cold spots. The 210T ripstop polyester shell carries a CIRE treatment that beads off condensation and light moisture, and the 280T micro polyester lining stays soft against the skin. A draft collar, full draft tube and hooded mummy cut work together to lock heat inside.
What features help on cold nights in the Alaska 450?
On a cold night the dual-slider zipper lets you vent at the feet or fully seal the bag, and the GLOW ZIP PULL is easy to find in the dark. Cinch the anatomical hood down to a small breathing hole in the worst cold, and let the draft collar trap the warm air you generate. Its 11.8 by 17.7 inch packed size stows in a winter pack alongside the rest of your kit.
Specifications
| Characteristic | Alaska 450 |
|---|---|
| Temperature, °C min comfort max |
-32 -18 +10 |
| Temperature, °F min comfort max |
-25.6 0 50 |
| Length × Width (EU) | 220 × 80/50 cm |
| Length × Width (US) | 86.6 × 31.5/19.7 in |
| Min Weight (EU) | 2.13 kg |
| Min Weight (US) | 4.70 lbs |
| Max Weight (EU) | 2.26 kg |
| Max Weight (US) | 4.98 lbs |
| Packed Size (EU) | ∅30 × 45 cm |
| Packed Size (US) | ∅11.8 × 17.7 in |
| Insulation | HollowCore 7 (3 × 150 g/m²) |
| Shell Material | 210T Ripstop Polyester with CIRE treatment |
| Lining Material | 280T Micro Polyester |
| Zip Options | Left (L) or Right (R) |
| Colors Available | Green/Grey, Blue/Grey |
| Shape | Mummy with Anatomical Hood |
| Season Rating | 3-Season |
| Special Features | GLOW ZIP PULL, Anti-Snag System, Draft Collar |
| Includes | Sleeping Bag, Compression Stuff Sack |
| Product Type | Technical Sleeping Bag |
Key features
- Comfort rating of 0 F (-18 C) with an extreme limit of -25.6 F (-32 C) for confident cold-weather nights
- Triple-layer HollowCore 7 insulation (three 150 g/m2 batts) builds deep, heat-trapping loft
- Anatomical mummy hood cinches around your head to stop heat escaping where it matters most
- Insulated draft collar seals warm air at the shoulders and blocks cold drafts from creeping in
- Full-length draft tube runs behind the zipper so no cold line forms along the closure
- 210T ripstop polyester shell with CIRE treatment sheds light moisture and resists tearing
- Soft 280T micro polyester lining feels comfortable against skin through long winter nights
- Dual-slider zipper with a GLOW ZIP PULL and anti-snag protection is easy to work in the dark
Who makes it
Terra Incognita has spent more than 18 years running trips and expeditions and manufacturing its own outdoor gear, so this model comes off the brand's own production line rather than a rebadged catalog. Every item carries a 12-month manufacturer warranty, and the design is tested in the field by the people who guide the trips.
Alaska 450 FAQ
How cold can the Alaska 450 sleeping bag handle?
The Alaska 450 has a comfort rating of 0 F (-18 C) and an extreme limit of -25.6 F (-32 C). That means it keeps most sleepers comfortable through hard frost, with additional survival margin for unexpected deep-cold conditions in winter or at altitude.
Is this a good sleeping bag for winter camping?
Yes, it is purpose-built for winter and cold-weather camping. The triple-layer HollowCore 7 insulation, anatomical hood, draft collar and full-length draft tube all work to hold heat at temperatures where lighter 3-season bags would leave you cold.
How much does the Alaska 450 weigh and pack down to?
It weighs between 4.70 and 4.98 lbs (2.13 to 2.26 kg) and packs to roughly 11.8 by 17.7 inches. That is a reasonable weight for the warmth it delivers, letting winter backpackers carry it into the backcountry rather than only using it at a drive-up camp.
Does the Alaska sleeping bag have a hood and draft collar?
Yes, it features an anatomical mummy hood plus an insulated draft collar at the shoulders. The hood cinches around your head to prevent heat loss, and the collar seals warm air inside the bag so cold drafts cannot pull it out during the night.
What is the shell made of and is it water resistant?
The shell is 210T ripstop polyester finished with a CIRE water-repellent treatment. The CIRE coating helps light moisture and tent condensation bead off the surface, while the ripstop weave adds tear resistance for rugged winter use.
Related gear
See more in Sleeping Bags, Sleeping Gear for Camper, Picnic Mat, Camping Pillow 50x30.
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