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Sea to Summit

Spark Ultralight -9 Women's Down Sleeping Bag

Lightweight down female-specific mummy-shaped bag for cold conditions

Down Filled Water Resistant Lightweight

Select options

Scales

Packability

Ultra Compact

Compact

Mid Size

Warmth

Summer

Multi-season

Alpine

Weight

Ultralight

Lightweight

Midweight

Product Specifications

Average weight 930g (Regular), 1027g (Long)

Compression 13 Litres (both sizes)

Fill weight 685g (Regular), 780g (Long)

Fill ULTRA-DRY Goose Down 850+ Loft, RDS certified

Fits to 170cm (Regular), 185cm (Long)

Foot width 46cm (Regular), 51cm (Long)

Inner 10D nylon with a non-PFC DWR finish

Outer 10D nylon

Shoulder width 71cm (Regular), 76cm (Long)

Temp rating minus 9°C comfort rating woman / minus 15°C Lower comfort rating for men; Temperature rated in accordance with ISO 23537-1:2022

Trusted Opinions

Our experts haven't reviewed this product yet.

Features

• Women's Mummy Fit: Fitted cut with generous anatomical footbox and technical hood, to maximise thermal efficiency and minimise bulk and weight. Wider at the hips and narrower at the shoulders for a better fit and heat retention for women.
• bluesign®-approved 10D nylon shell and lining fabric offers breathability, protection and effective temperature regulation for premium comfort in the outdoors; PFC-free DWR (durable water repellent) treatment keeps the hood and footbox highly water resistant
• 850+ Fill Power, RDS-certified, Goose Down with ULTRA-DRY Down treatment for improved water resistance in damp conditions
• 3/4-length #5 zip with anti-snag zip plow and two sliders
• Vertical chest baffles, horizontal baffles in the lower half and base, box wall baffle construction throughout
• Technical fitted hood with soft touch adjustment, extra deep for cosy-like feel
• Double draft collar
• Single, down-filled, draft tube along the top of all zips
• QuiltLock System and drawcord footbox enables quilts to be secured to Sea to Summit sleeping bags for added functionality and freedom
• Comes with an Ultra-Sil compression bag and a storage cell
• Ultralight does not mean ultra-tight: The Spark mummy sleeping bags are snug but still have adequate wiggle room for the performance-oriented, backcountry user

Sea to Summit

Ascent -9 Women's Regular Down Sleeping Bag

Designed for comfort and adaptability and suited to a wide range of adventures in cold conditions

Down Filled Water Resistant Lightweight

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Scales

Packability

Ultra Compact

Compact

Mid Size

Warmth

Summer

Multi-season

Alpine

Weight

Ultralight

Lightweight

Midweight

Product Specifications

Average weight 1251g (Regular), 1403g (Long)

Compression 20 Litres (Regular), 26 Litres (Long)

Fill weight 797g (Regular), 900g (Long)

Fill ULTRA-DRY Goose Down 750+ Loft, RDS certified

Fits to 170cm (Regular), 185cm (Long)

Foot width 46cm (Regular), 51cm (Long)

Inner 20D recycled polyester with a non-PFC DWR finish

Outer 20D recycled polyester

Shoulder width 71cm (Regular), 76cm (Long)

Temp rating minus 9°C comfort rating woman / minus 15°C Lower comfort rating for men; Temperature rated in accordance with ISO 23537-1:2022

Trusted Opinions

Staff (1)

H

Holly Bivouac Team Member

The Ascent -9° is by no means the smallest packing sleeping bag, but it is light. The Ascent series offers the relaxed mummy shape ideal for those who don't like the confinement of a mummy or are side sleepers. With an extreme low of -15° this bag is more than capable of handling New Zealand's winter alpine conditions and is one of the warmest in our range. However, the Free-Flow zipper configuration allows you to regulate temperature and makes it more useable in warmer temps compared to other sleeping bags with a single-half zip and the same temperature rating - but don't worry the wind won't be able to cut through the zipper draft tubes!

Fit tip:

Roomy

Trusted Opinions

Staff (1)

H

Holly Bivouac Team Member

The Ascent -9° is by no means the smallest packing sleeping bag, but it is light. The Ascent series offers the relaxed mummy shape ideal for those who don't like the confinement of a mummy or are side sleepers. With an extreme low of -15° this bag is more than capable of handling New Zealand's winter alpine conditions and is one of the warmest in our range. However, the Free-Flow zipper configuration allows you to regulate temperature and makes it more useable in warmer temps compared to other sleeping bags with a single-half zip and the same temperature rating - but don't worry the wind won't be able to cut through the zipper draft tubes!

Fit tip:

Roomy

Features

• Women's Relaxed Mummy Fit: A more relaxed yet tapered mummy fit with high thermal performance. Wider at the hips and narrower at the shoulders for a better fit and heat retention for women.
• Lightweight 100% recycled 20D nylon shell with a non-PFC DWR finish to protect against wind and moisture and a 20D recycled nylon liner for greater comfort
• bluesign®-approved fabrics
• 750+ Fill Power, RDS-certified, Goose Down with ULTRA-DRY Down treatment for improved water resistance 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
• Vertical chest baffles, horizontal baffles in the lower half and base, box wall baffle construction throughout
• Generous fitted hood with two soft touch adjustments and fits a Sea to Summit regular pillow
• 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 unisex Sea to Summit bags 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

Spark Ultralight -9 Women's Down Sleeping Bag

Ascent -9 Women's Regular Down Sleeping Bag