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Ascent -1C/30F Down
Natural down sleeping bag -
Home delivery from 06/10/2026
60 days to change your mind
No subject to promotional offersThe men's sleeping bag Ascent -1C/30F Down from Sea to Summit is a 3-season sleeping bag perfect for your short-term adventures.
This model is part of the Trailblazer range, designed to offer lightness, reliability, and durability. The features of this sleeping bag allow you to use it worldwide and accompany you on all your adventures. To achieve this, the sleeping bag is filled with RDS-certified duck down with a fill power of 750 CUIN, treated with Ultra-Dry Down to make it highly resistant to moisture, and therefore more insulating. The baffles are vertically aligned at the chest to prevent the down from shifting and to ensure even protection and good heat retention, with a comfort temperature of 3ºC.
This model features a Free Flow double-slider zipper to provide better airflow and ventilation when temperatures rise. There is a main zip running the full length, as well as a second half-length zip on the opposite side. The foot end zipper is also double-slider. A spacious design, an adjustable drawcord at the collar with space for a pillow, and a technical adjustable hood are additional details that will make a difference to your comfort. The Ascent -1C/30F Down is a warm, comfortable, and adaptable sleeping bag for perfect nights from spring to autumn!
- Zipped Footbox
- Generous and adjustable hood with 2 adjustment points
- Compatible with a Sea to Summit pillow
- Can be joined
- FreeFlow zip system
- Double collar and drawcord tube
- Full-length main closure with zip guard and 2 sliders
- Secondary closure over 1/3 length with zip guard and 2 sliders
- PFC-free product
Composition:
- Filling: 750 CUIN goose down
- Outer fabric and lining: 20D recycled nylon
- Hood and feet: 10D nylon
Sizes:
| Size | Regular | Long |
| Max user height | 1.85 m | 1.98 m |
| Shoulder width | 79 cm | 84 cm |
| Hip width | 73 cm | 78 cm |
| Foot width | 60 cm | 65 cm |
| Total weight | 782 g | 879 g |
| Filling weight | 300 g | 343 g |
| Compressed volume | 8 L | 8 L |
| Ultra Dry Down | DWR treatment applied to the down. In damp conditions, it allows the down to retain 60% more warmth, absorb 30% less moisture, and dry 60% faster than untreated down. |
| Responsible Down Standard - RDS | The RDS standard ensures down and feathers come from ducks and geese that are well treated, living healthily and expressing their natural behaviours, without experiencing pain, fear or distress. This standard covers the entire supply chain, from farming to the final product. |
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