Ascent -1 Down Sleeping Bag
Style Code: STS-10296-RAINFRS
$799.99
- Thermally-efficient, more relaxed mummy fit, room in the hood to fit an Aeros pillow and the option to zip couple with a compatible Sea to Summit Women's bag to deliver space for two comes standard
- Lightweight 100% recycled 20D nylon shell with a non-PFAS DWR finish to protect against wind and moisture and a 20D recycled nylon liner for greater comfort
- 750+ Fill Power, RDS-certified, Goose Down with ULTRA-DRY Down™ treatment to stay drier in damp conditions
- Free Flow Zip System for reliable, snag-free operation and minimal weight:
- Primary zip: full-length #5 with zip-plow and two sliders
- Secondary zip: 1/2-length #3 with zip-plow and two sliders
- Footbox zip: #5 with two sliders
- Box baffle construction throughout with vertical baffles in the torso to minimise down shift and maximise the retention of warmth
- Fitted front draft collar: scalloped over the neck and oversized at the shoulders
- Single, down-filled draft tube along the top of zips
- Internal pocket for phone / GPS / valuables
- Pairs with women's version for a snug double sleeping bag
- QuiltLock System allows integration with Sea to Summit quilts
- Comes with an Ultra-Sil compression bag and a storage cell
| Average weight |
944g, 879g (Long, Long with packsack)
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| Compression |
6.4 Litres
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| Fill |
ULTRA-DRY™ 90/10 Goose Down 750+ Loft, RDS certified
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| Fill weight |
343g (Long)
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| Fits to |
198cm (Long)
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| Foot width |
64.5cm (Long)
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| Inner |
20D recycled nylon
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| Outer |
20D recycled nlyon, non-PFAS DWR
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| Shoulder width |
84cm (Long)
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| Temp rating |
3°C comfort rating woman / minus 1°C Lower comfort rating for men; Temperature rated in accordance with ISO 23537-1:2022
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ULTRA-DRY Down™: With the introduction of water-repellent ULTRA-DRY Down™ Seat to Summit have virtually eliminated the negative effects moisture has on down. The ULTRA-DRY Down™ water-repellent treatment protects the down from external moisture and condensation from inside the bag. It is a permanent (no loss of treatment effect has been seen in over 14 wash cycles) Nano-level water repellent polymer treatment applied to Sea to Summit high loft, high quality down. The Nano-thin treatment vastly improves the down's reaction to water without effecting its weight or loft performance. ULTRA-DRY Down™ retains over 60% more loft and absorbs 30% less moisture when compared with untreated down. Sea to Summit sleeping bags dry out 60% faster than bags with untreated down. The Nano-level treatment also inhibits bacterial and microbial growth, which makes Sea to Summit sleeping bags more hygienic and improves their lifespan.
Responsible Down Standard (RDS): The RDS is helping to shift the entire down and feather industry towards more humane animal rearing and handling practices. Overseen by the industry leading Textile Exchange, the RDS requires independent, third party assessments of all aspects of animal rearing and handling throughout the entire supply chain. By only using down that meets the audited requirements of the RDS we can have confidence that each phase of the collection process has been completed with the welfare and ethical treatment of waterfowl in mind. To find out more about how the RDS is improving animal welfare during down collection, please visit (link will open a new window).
- How long will my order take to arrive?
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- How much does shipping cost?
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- Can I return or exchange an item if it doesn’t fit?
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- Can I click & collect my order?
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- Can I track my order?
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Shipping policy
Delivery Charges:
| Total Purchase Price | $149.99 and Under | $150 and Over |
| Within New Zealand | $5 | Free |
| Oversized Items NZ* | $30 for 1 item $50 for 2 or more |
$30 for 1 item $50 for 2 or more |
*Due to the oversized nature of certain products in our range we must charge an oversized shipping fee of $30 for 1 oversized item, or $50 for 2 or more oversized items to reflect the cost of shipping. This will include large packs, tents or heavy items. In most cases, a note will be displayed in the product description where this is applicable.
International Orders:
We are unable to ship internationally.
NZ Overnight Delivery:
All standard orders are sent via NZ Post’s Overnight Delivery Service. Orders placed before 2pm are usually delivered the next working day - nationwide, however delivery timeframes may occasionally vary due to courier delays outside of our control.
- Options for 'Signature Required' or 'No Signature Required' via the checkout.
- We deliver to NZ physical addresses and PO Boxes (no parcel lockers).
- We ship Monday to Friday (excluding Public Holidays).
- For Rural Deliveries and in certain parts of NZ - time frames may take a bit longer.
- Additional delays may also occur if further payment or address information is required.
- Your Order Confirmation Email and Shipping Confirmation Email will be sent from shop@bivouac.co.nz
- Orders with both standard and oversized items in them, will be delivered in the oversized delivery timeframe of 3-7 working days.
We strongly advise all customers to check goods thoroughly upon delivery before destroying packaging or removing any attached tags.
Oversized Deliveries:
Shipping of oversized items takes 3-7 working days. However you are able to pick these up Same Day using Click and Collect, should the oversized item be available in your selected store. Find out more about Click & Collect for oversized items.
Track & Trace
All items are tracked using NZ Post. Check your Shipping Confirmation email for a link or click here and enter your tracking details.
To get your order to you as quickly as possible, your items may be shipped from multiple locations. This means your order could arrive in separate packages or be delivered on different days.
Click & Collect:
We offer free Click & Collect on all available items. Learn more about our Click & Collect service.
Non Shipping Days and Delays:
- Orders placed late Friday or over the weekend are processed the following Monday.
- Sale periods may cause delays due to increased order volume.
Note: During public holidays courier services are unavailable and dispatch will occur the next working day:
- 1st & 2nd January – New Years holidays
- 6th February – Waitangi Day
- Easter Weekend – Good Friday & Easter Monday
- 25th April – ANZAC Day
- 1st Monday in June – King's Birthday
- One Friday during June/July - Matariki
- 4th Monday in October – Labour Day
- Nearest Friday to 16 November – Canterbury Anniversary
- 25th & 26th December – Christmas & Boxing Day
Rural Delivery:
No additional charges or fees for any rural deliveries throughout New Zealand. Some rural deliveries may take longer than standard NZ delivery times. Rural may take a further 1-2 days.
Cancellation Policy:
Unfortunately orders cannot be cancelled or modified once they are placed. However, if there's an issue with your order, please contact our Customer Service team as soon as possible and we'll do our best to help.
We also offer a 30 days return period. For any questions about returns, please contact our Customer Service team at shop@bivouac.co.nz or visit our Returns page for more information.
Returns & Refunds:
View our Bivouac Outdoor returns policy for more information.
Ascent -1 Down Sleeping Bag
RAIN FOREST
$799.99
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