Highlights
BEST USE: Backpacking
PERFORMANCE: 3 Season
WEIGHT: 1lb 11.6oz | 782g
COMPRESSED VOLUME: 5.5L
LOWER TEMP RATING: 30°F | -1°C
Shipping & Returns
We use climate-neutral shipping:
DHL GoGreen for orders to Germany, Austria and Czech Republic and
GLS Klima Protect for orders to Belgium, the Netherlands and Luxembourg.
For orders with a value below 75€ we charge a shipping fee of 4,95€. We do not charge shipping fees for orders with a value over 75€.
All orders received by 12:00 noon on weekdays are usually shipped the same day. Later orders are usually dispatched the following working day.
Delivery time can take up to three working days Germany-wide and up to four working days for orders outside of Germany, and depends on the shipping service provider.
All orders can be returned within 14 days of purchase. However, for the sake of the environment, please make sure to keep returns as low as possible.
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Description
Our most versatile sleeping bag available, in colder temperatures you can cinch down the technical hood, zip up the draft-tube protected zippers and allow the 750+ Ultra-Dry Goose Down to keep you warm. In warmer conditions, the Free-Flow Zip system lets you unzip in different configurations for superior ventilation and even open up flat to turn the Ascent sleeping bag into a quilt on the warmest of nights. All of the above make the Ascent a true three-season backcountry bag, one of very few on the market. Close the snaps at the shoulders, open the footbox zipper and wear the Ascent at camp - hardcore adventures don't have to be hard all the time.
Design Details
Technical Features
The third highest-lofting down used in any of Sea to Summit’s sleeping bags or quilts. 750+ Fill Power indicates that one ounce (30g) of down will re-expand to over 750 cubic inches after compression. Higher loft means that less down can be used to achieve the same temperature rating – important for performance sleeping bags. The loft and down quality/composition are independently tested by the International Down and Feather Laboratory (IDFL) – a copy of the certification is supplied with every Sea to Summit sleeping bag. The down is responsibly sourced and RDS certified and treated with our non-PFC Ultra-Dry Down™ treatment.
Our Free Flow triple-zip design ensures your sleeping bag retains maximum warmth and efficiency when needed and multiple ventilation options when it's not. The (half-) zip on the right side of the bag (left side on women's bags) provides freedom of movement for both arms, additional ventilation and allows (the top third of) the bag to be folded down as a (mini) quilt when the mercury climbs higher than expected.
100% of the down used in our sleeping bags and quilts is independently certified to the Responsible Down Standard (RDS). The RDS certifies down against animal welfare requirements and tracks it from the source to the final product. The purchase of RDS certified products demonstrates demand for better animal welfare practices in the down and feather supply chain. Sea to Summit is certified to the RDS. To learn more about RDS visit https://textileexchange.org/standards/responsible-down/
Sea to Summit sleeping bags do not contain PFCs.
Ultra-Dry Down™ uses a non-PFC hydrophobic treatment to ensure it absorbs less moisture and dries more quickly. The treatment does not affect the breathability or the lifespan of the down and lasts through at least 20 washings.
The down used in our sleeping bags is RDS-certified responsibly sourced.
Down and synthetic-insulated sleeping bags utilize a non-PFC DWR treatment on the shell fabric for external moisture repellency. This helps prevent the insulation from becoming damp if the sleeping bag comes into contact with condensation on a tent wall, for instance.
Tech specs
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Best UseBackpacking
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Comes WithUltra-Sil™ Compression Bag & Storage Cell
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InsulationRDS certified, 750+ PFC free Ultra-Dry Down
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ShapeMummy
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Zip OptionsFree Flow zip system
| -1C|30F Regular | -1C|30F Long | -9C|15F Regular | -9C|15F Long |
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Frequently Asked questions
Is the Ascent suitable for colder weather?
Yes - the -9°C/15°F version has high-lofting down, a technical hood and draft tubes that make it great for extended three-season use.
Is the Ascent comfortable in warmer weather?
Yes! The Free Flow zippers can be opened sequentially for ventilation or to open the bag completely flat as a quilt.
Can the Ascent be zipped to another sleeping bag?
Yes - the Unisex Ascent can be coupled with a Women's Ascent, or zipped together with most STS Women's sleeping bags
