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Ascent -9C/15F Down + Sea To Summit

Ascent -9C/15F Down

3-season sleeping bag - Ascent -9C/15F Down - Sea to Summit - 2026

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Ascent -9C/15F Down
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499,90 €
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Description

The 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!

Ascent -9C/15F Down
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Technical details
Comfort temperature
-2
Sleeping bag shape
Mummy
Insulation type
Down
Use - sleeping bag
Trekking
Overview
Brand
Sea To SummitSea To Summit-logo
Warranty
2
Year
2026
Season
Spring
Gender
Unisex
Product details
Weight (g)
1020
Shoulders (cm)
84
Feet (cm)
65
Length (cm)
198
Compressed volume
13
Technical details
Composition
Nylon 20D, Duvet naturel certifié RDS
Zip side
Droit Gauche
Seasons
3
Combinable
No
Performance
Extreme temperature
-26
Comfort temperature limit
-9
Use type
14605 14613
Filling
Down
Other features

- 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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