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Sea to Summit Ascent -9C Down Sleeping Bag

The Ascent -9C down sleeping bag from Sea to Summit is a versatile and comfortable sleeping bag for three seasons, equipped with RDS-certified Ultra-Dry goose down and an innovative zipper system.

529.95€ 401.45€ incl. VAT.
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697-ASL041101-212004

Delivery time 7 - 9 business days *

For deliveries to Germany
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Ascent -9C Down Sleeping Bag
Ascent -9C Down Sleeping Bag
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30 days return policy
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Carbon neutral shipping (DHL)

The facts at a glance

Suitable for
  • Unisex
Materials
  • Down

Sea to Summit Ascent -9C Down Sleeping Bag

The Ascent -9C down sleeping bag from Sea to Summit is the most versatile sleeping bag on the market and ideal for adventurers who are not deterred by cold temperatures. Featuring RDS-certified goose down with an impressive fill power of 750+ and treated with a PFC-free Ultra-Dry process, this sleeping bag stays reliably dry even in humid environments. The lightweight outer material made from recycled 20D-nylon and the PFC-free DWR-impregnation provide optimum protection against wind and moisture, while the inner material ensures additional comfort.
The Free Flow zipper system allows excellent temperature regulation and offers multiple sleeping bag configurations. In colder temperatures, you can pull down the technical hood and let the warm down envelop you. On warmer days, the sleeping bag can be opened completely and transformed into a quilt, making it an ideal companion for three seasons. The continuous hollow chamber construction with vertical hollow chambers in the upper body area minimizes the displacement of the down and maximizes heat retention.
The looser mummy fit of the Ascent -9C not only offers thermal efficiency, but also space in the hood for an Aeros pillow. There is also the option to connect the sleeping bag to a compatible women's specific Sea to Summit sleeping bag to create space for two people. Another highlight is the function of wearing the sleeping bag like a piece of clothing by closing the press studs in the shoulder area and opening the zipper of the foot box - ideal for cozy camping evenings.
The Ascent -9C down sleeping bag is a real all-rounder for backcountrycamping and is one of the few sleeping bags that are suitable for three seasons. Whether in cold temperatures or warm nights, this sleeping bag always offers perfect comfort.

Product details

Weight:
782g
Features:
  • Ventilation zipper
  • RDS-certified goose down with a fill power of 750+ and treated with a PFC-free Ultra-Dry down process to stay drier in humid environments
  • Free Flow zipper system with excellent temperature regulation and multiple sleeping bag configurations
  • The standard equipment includes: warmth-efficient, looser mummy fit, space in the hood for an Aeros pillow and the ability to connect the sleeping bag to a compatible, women's-specific Sea to Summit sleeping bag to accommodate two people
  • Lightweight outer material made from recycled 20D nylon with PFC-free DWR waterproofing to protect against wind and moisture and inner material made from recycled 20D nylon for more comfort
  • Continuous hollow chamber construction with vertical hollow chambers in the upper body area to minimize downward displacement and maximize heat retention

Technologies and manufacturing processes

  • 750+ LOFT ULTRA-DRY DOWN

    The third highest fill power in all Sea to Summit sleeping bags and quilts. 750+ Fill Power means that one ounce (30 g) of down expands to over 750 cubic inches after compression. A higher loft means that less down can be used to achieve the same temperature value - important for high-performance sleeping bags. The loft and quality/composition of the down is independently tested by the International Down and Feather Laboratory (IDFL) - a copy of the certificate is supplied with every Sea to Summit sleeping bag. The down is responsibly sourced, RDS certified and treated with our PFC-free Ultra-Dry Down treatment.
  • FREE FLOW ZIP

    Our Free Flow construction with three zippers ensures that your sleeping bag offers maximum warmth and efficiency or a variety of ventilation options, depending on your needs. The (half) zipper on the right side of the sleeping bag (left side for women's specific sleeping bags) provides freedom of movement for both arms, extra ventilation and allows you to fold down (the top third) of the sleeping bag as a (mini) quilt when it gets warmer than expected.
  • RESPONSIBLE DOWN STANDARD (RDS)

    100% of the down used in our sleeping bags and quilts is independently certified to the Responsible Down Standard (RDS). The RDS certifies down according to animal welfare requirements and tracks it from source to end product. Purchasing RDS certified products demonstrates the demand for better animal welfare practices in the down and feather supply chain. Sea to Summit is RDS certified. More information about the RDS can be found at https://textileexchange.org/standards/responsible-down/
  • PFC-free

    All Sea to Summit Dry Bags, Pole Bags and Compression Bags have a durable water-repellent, PFC-free coating.

How to choose the right size

Size
Regular
Long
Max. Height(cm)
185
198
Gewicht (g)
730
786
Komprimiertes Volumen (L)
6.8
7.6
Kompressionssack (L)
13
13
Füllgewicht (g)
480
540
Minimale Temperatur (Grad)
-9
-9
Komfort Temperatur (Grad)
-2
-2
Size
Regular
Long
Max. Height(cm)
185
198
Gewicht (g)
730
786
Komprimiertes Volumen (L)
6.8
7.6
Kompressionssack (L)
13
13
Füllgewicht (g)
480
540
Minimale Temperatur (Grad)
-9
-9
Komfort Temperatur (Grad)
-2
-2

More information in SportFits magazine

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