Ascent -9C/15F Down
3-season sleeping bag -
Home delivery from 29/07/2026
60 days to change your mind
No subject to promotional offersThe men's Ascent -9C/15F Down sleeping bag from Sea to Summit is a 3-season sleeping bag perfect for short adventures.
This model is part of the range Trailblazer, designed to offer lightness, reliability and strength. The features of this sleeping bag allow you to use it anywhere in the world and accompany you on all your adventures. To achieve this, this sleeping bag is made from RDS-certified duck down with a fill power of 750 CUIN , which has been treated Ultra-Dry Down to make it highly durable and therefore more insulating. The padding has been placed vertically at chest level to prevent the down from shifting and ensure even protection and warmth for a comfortable temperature of -2ºC.
This model features a double-sided Free Flow zip for improved air circulation and ventilation when temperatures rise. There is a main zip along the entire length, as well as a second half-length zip on the other side. The zip at the feet is also a double-sided zip. A spacious design, an adjustment cord at the collar with space for a pillow, and an adjustable technical hood are all additional details that will make a difference to your comfort. TheAscent -9C/15F Down is a warm, comfortable and adaptable sleeping bag for perfect nights from spring to autumn!
- Footbox zipless
- Generous, fitted hood with two adjustment points
- Compatible with a pillow Sea to Summit
- Combinable
- Zip system FreeFlow
- Double collar and draw shaft
- Full-length main fastening with zip guard and 2 sliders
- Secondary closure over 1/3 of the length with zip guard and 2 sliders
- PFC-free product
Composition :
- Filling : 750 CUIN goose down
- Outer material and Lining: 20D recycled Nylon
- Hood and feet: 10D Nylon
Sizes:
| Size | Regular | Long |
| Maximum user height | 1.85 m | 1.98 metres |
| Shoulder width | 79 cm | 84 cm |
| Hip width | 73 cm | 78 cm |
| Foot width | 60 cm | 65 cm |
| Total weight | 1020 g | 1157 g |
| Filling weight | 540 g | 617 g |
| Compressed volume | 13 L | 13 L |
| Ultra Dry Down | Water-repellent treatment applied to the feather. In damp conditions, it retains 60% more warmth, absorbs 30% less moisture and dries 60% faster than untreated feathers. |
| Responsible Down Standard - RDS | The standard RDS guarantees that down and feathers come from ducks and geese that are well treated, live in good health and express their natural behaviours, without experiencing pain, fear or distress. This standard covers the entire supply chain, from breeding to the final product. |
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