Description
Alpine Down Sleeping Bag for High Altitude and Colder Latitude Adventures
Gear up for your next high altitude or colder latitude adventure with the Alpine Down Sleeping Bag. Filled with 850+ fill power goose down treated with PFAS-free Ultra-Dry Down, it stays warm and lofty even in damp alpine conditions. The roomy expedition mummy fit leaves space for performance clothing and essential gear, while the Free-Flow Zip system gives you control over ventilation. Built with complex construction and durable materials, it is made for mountaineering and harsh winter use where reliability matters most.
Features
- 850+ Fill Power Goose Down: Each 30g of down expands to 850 cubic inches, giving exceptional warmth-to-weight efficiency.
- Ultra-Dry Down Treatment (PFAS-free): Hydrophobic coating absorbs less moisture, dries faster, and keeps loft even in damp alpine conditions.
- Recycled 20D Nylon Shell: Lightweight, durable, and coated with PFAS-free DWR to protect against condensation inside tents.
- Expedition Mummy Fit: Roomy cut offers extra space for insulated clothing or gear.
- Free-Flow Zip System: Full-length zipper plus a half-length opposite zip for multiple ventilation options.
- QuiltLock Compatibility: Snap closures allow you to attach Sea to Summit quilts for extra versatility, turning a three-season bag into a four-season system.
- Breathable Liner: Promotes comfort and reduces condensation inside the bag.
- Technical Hood and Footbox: Maximises warmth retention where you need it most.
- Generous Draft Tubes: Runs along the zippers to block out cold air.
- Lifetime Guarantee from Sea to Summit.
Performance
- Weight: 1.645 kg (Long)
- Compressed Volume: 14 L (Long)
- Temperature Rating: -29°C ISO Lower Limit | -19°C ISO Comfort
- Packability: Compact with included 40D recycled bluesign® approved compression bag
- Best Use: Mountaineering and extreme cold expeditions
Tech Specs
- Shape: Expedition mummy
- Insulation: RDS-certified 90/10 Goose Down, 850+ fill power, PFAS-free Ultra-Dry treatment
- Shell: 100% recycled 20D nylon with PFAS-free DWR
- Lining: 100% nylon
- Stuff Sack: 100% nylon (excluding trims)
- Fill Weight: 1135 g (Long)
- Fits Up To Height: 198 cm (Long)
| -29°C Regular |
-29°C Long |
|
|---|---|---|
| Bag Weight | 1459g | 1645g |
| Compressed Volume | 12.6 L | 14 L |
| Compression Sack | 26 L | 26 L |
| Fill Weight | 1000 g | 1135 g |
| Fits Up To Height | 185 cm | 198 cm |
| Temperature Rating ( ISO Lower Limit) | -29°C | -29°C |
| Temperature Rating (ISO Lower Limit) | -29°C | -19°C |
| Women's Temp Rating (ISO Comfort) | -19°C |
Features
- Serious cold weather down bag
- 850+ fill power goose down insulation
- Long expedition cut for taller campers
- Recycled 20D shell built tough
- Packs to 14 L for winter loads
- Smart buy for alpine missions
Specifications
- Temperature rating: -29°C ISO Lower Limit / -19°C ISO Comfort
- Size: Long
- Bag weight (Long): 1.645 kg
- Fill weight (Long): 1135 g
- Insulation: RDS-certified 90/10 goose down, 850+ fill power, PFAS-free Ultra-Dry Down
- Shell fabric: 100% recycled 20D nylon with PFAS-free DWR
- Lining fabric: 100% nylon
- Shape: Expedition mummy
- Compressed volume (Long): 14 L
- Compression sack volume: 26 L
- Fits user height up to: 198 cm
- Best use: Mountaineering and extreme cold expeditions
- Construction: Technical hood, shaped footbox and generous draft tubes
- Warranty: Lifetime guarantee from Sea to Summit
- Sea to Summit Alpine Down Sleeping Bag -29°C | -20°F - Long
- 40D recycled bluesign® approved compression stuff sack
- Storage / stuff sack made from 100% nylon (excluding trims)
| SKU | ASL041043-210903 |
|---|---|
| Barcode # | 9327868157778 |
| Brand | SEA TO SUMMIT |
| Shipping Weight | 1.6450kg |
| Shipping Width | 0.300m |
| Shipping Height | 0.200m |
| Shipping Length | 0.500m |
SEA TO SUMMIT Alpine Down Sleeping Bag -29C|-20F - Long (RDS, RCS)
SKU: ASL041043-210903
Sale price
REG $1,399.99
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Description
Alpine Down Sleeping Bag for High Altitude and Colder Latitude Adventures
Gear up for your next high altitude or colder latitude adventure with the Alpine Down Sleeping Bag. Filled with 850+ fill power goose down treated with PFAS-free Ultra-Dry Down, it stays warm and lofty even in damp alpine conditions. The roomy expedition mummy fit leaves space for performance clothing and essential gear, while the Free-Flow Zip system gives you control over ventilation. Built with complex construction and durable materials, it is made for mountaineering and harsh winter use where reliability matters most.
Features
- 850+ Fill Power Goose Down: Each 30g of down expands to 850 cubic inches, giving exceptional warmth-to-weight efficiency.
- Ultra-Dry Down Treatment (PFAS-free): Hydrophobic coating absorbs less moisture, dries faster, and keeps loft even in damp alpine conditions.
- Recycled 20D Nylon Shell: Lightweight, durable, and coated with PFAS-free DWR to protect against condensation inside tents.
- Expedition Mummy Fit: Roomy cut offers extra space for insulated clothing or gear.
- Free-Flow Zip System: Full-length zipper plus a half-length opposite zip for multiple ventilation options.
- QuiltLock Compatibility: Snap closures allow you to attach Sea to Summit quilts for extra versatility, turning a three-season bag into a four-season system.
- Breathable Liner: Promotes comfort and reduces condensation inside the bag.
- Technical Hood and Footbox: Maximises warmth retention where you need it most.
- Generous Draft Tubes: Runs along the zippers to block out cold air.
- Lifetime Guarantee from Sea to Summit.
Performance
- Weight: 1.645 kg (Long)
- Compressed Volume: 14 L (Long)
- Temperature Rating: -29°C ISO Lower Limit | -19°C ISO Comfort
- Packability: Compact with included 40D recycled bluesign® approved compression bag
- Best Use: Mountaineering and extreme cold expeditions
Tech Specs
- Shape: Expedition mummy
- Insulation: RDS-certified 90/10 Goose Down, 850+ fill power, PFAS-free Ultra-Dry treatment
- Shell: 100% recycled 20D nylon with PFAS-free DWR
- Lining: 100% nylon
- Stuff Sack: 100% nylon (excluding trims)
- Fill Weight: 1135 g (Long)
- Fits Up To Height: 198 cm (Long)
| -29°C Regular |
-29°C Long |
|
|---|---|---|
| Bag Weight | 1459g | 1645g |
| Compressed Volume | 12.6 L | 14 L |
| Compression Sack | 26 L | 26 L |
| Fill Weight | 1000 g | 1135 g |
| Fits Up To Height | 185 cm | 198 cm |
| Temperature Rating ( ISO Lower Limit) | -29°C | -29°C |
| Temperature Rating (ISO Lower Limit) | -29°C | -19°C |
| Women's Temp Rating (ISO Comfort) | -19°C |
Features
- Serious cold weather down bag
- 850+ fill power goose down insulation
- Long expedition cut for taller campers
- Recycled 20D shell built tough
- Packs to 14 L for winter loads
- Smart buy for alpine missions
Specifications
- Temperature rating: -29°C ISO Lower Limit / -19°C ISO Comfort
- Size: Long
- Bag weight (Long): 1.645 kg
- Fill weight (Long): 1135 g
- Insulation: RDS-certified 90/10 goose down, 850+ fill power, PFAS-free Ultra-Dry Down
- Shell fabric: 100% recycled 20D nylon with PFAS-free DWR
- Lining fabric: 100% nylon
- Shape: Expedition mummy
- Compressed volume (Long): 14 L
- Compression sack volume: 26 L
- Fits user height up to: 198 cm
- Best use: Mountaineering and extreme cold expeditions
- Construction: Technical hood, shaped footbox and generous draft tubes
- Warranty: Lifetime guarantee from Sea to Summit
- Sea to Summit Alpine Down Sleeping Bag -29°C | -20°F - Long
- 40D recycled bluesign® approved compression stuff sack
- Storage / stuff sack made from 100% nylon (excluding trims)
| SKU | ASL041043-210903 |
|---|---|
| Barcode # | 9327868157778 |
| Brand | SEA TO SUMMIT |
| Shipping Weight | 1.6450kg |
| Shipping Width | 0.300m |
| Shipping Height | 0.200m |
| Shipping Length | 0.500m |
