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Spark Ultralight -1 Women's Down Sleeping Bag
Down Filled
Water Resistant
Lightweight
Expert Pick
Packability
Ultra Compact
Compact
Mid Size
Warmth
Summer
Multi-season
Alpine
Weight
Ultralight
Lightweight
Midweight
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Average weight
584g (Regular), 639g (Long)
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Compression
5 Litres (Regular), 8 Litres (Long)
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Fill weight
375g (Regular), 430g (Long)
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Fill
ULTRA-DRY Goose Down 850+ Loft, RDS certified
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Fits to
170cm (Regular), 185cm (Long)
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Foot width
46cm (Regular), 51cm (Long)
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Inner
10D nylon with a non-PFC DWR finish
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Outer
10D nylon
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Shoulder width
71cm (Regular), 76cm (Long)
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Temp rating
minus 1°C comfort rating woman / minus 7°C Lower comfort rating for men; Temperature rated in accordance with ISO 23537-1:2022
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- 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
- Half-length #5 zip with anti-snag zip plow and two sliders
- Vertical chest baffles, horizontal baffles in the lower half and base, box wall baffles in the top half and sewn-through quilted construction lower half
- Technical fitted hood with soft touch adjustment, extra deep for cosy-like feel
- Standard front 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
