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Spark Ultralight -1 Women's Down Sleeping Bag
Down Filled
Water Resistant
Lightweight
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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Foot width
46cm (Regular), 51cm (Long)
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Shoulder width
71cm (Regular), 76cm (Long)
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Fits to
170cm (Regular), 185cm (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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Inner
10D nylon with a non-PFC DWR finish
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Outer
10D nylon
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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
Reactor Lightweight Sleeping Bag Liners
Lightweight
Recycled
Antimicrobial
No scale data available.
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Average weight
235g (Short), 255g (Regular), 270g (Long)
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Foot width
55cm
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Shoulder width
80cm
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Length
178cm (Short), 193cm (Regular), 206cm (Long)
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Material
100% post-consumer recycled polyester
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Rolled size
10 x 18 x 10cm
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Fits to
170cm (Short), 185cm (Regular), 198cm (Long)
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- Lightweight and insulative, Thermolite® Pro technology with hollow-core fibres and infrared-absorbing pigments enhances warmth with minimal pack size
- Stretch fabric means the Reactor Liner fits any shape of sleeping bag
- Stretch-knit and shaped arm openings allow unrestricted movement, providing natural comfort throughout your sleep
- Ergonomic design with a fitted hood delivers optimal warmth and comfort without extra weight or bulk
- Snap connectors at the shoulders easily pair with Sea to Summit sleeping bags for quick, hassle-free entry and exit
- Machine washable construction simplifies care and reduces wear on your sleeping bag over time
- HeiQ Fresh odour control technology helps keep the liner fresh even after extended use
- Comes with a stuff sack
- Crafted with certified recycled fibres and bluesign®-approved materials to minimise environmental impact
- Ideal for
Reactor Mummy Sleeping Bag Liner
No scale data available.
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Average weight
265g
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Foot width
55cm
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Shoulder width
80cm
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Length
206cm
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Material
50% Thermolite® Pro Yarn, 50% Thermolite® EcoMade yarn
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Rolled size
15 x 7 x 11cm
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- Reactor liners provide a thermal boost to retain heat and warmth. As the core of your sleep system the Reactor liner extends the performance of your sleeping bag in colder conditions.
- Fabric is a blend of 50/50 blend of ThermoLite® Pro and 100% recycled ThermoLite® EcoMade and uses infrared technology for increased insulation
- ThermoLite® Pro technology uses knitted, hollow-core fibres and infrared-absorbing ceramic pigments to reflect your body's heat back for enhanced warmth and comfort
- Knitted fabric provides incredible stretch and freedom of movement and these liners work perfectly with sleeping bags of any shape
- The classic Mummy version has practical openings in the shoulders to allow you user to stretch your arms out
- HeiQ Fresh odour control technology helps keep the liner fresh even after extended use
- Keeps sleeping bag clean on the inside
- Comes with an Ultra-sil stuff sack
Clearance
Reactor Mummy with Drawcord Sleeping Bag Liner
Insulated
Lightweight
Recycled
No scale data available.
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Average weight
284g
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Foot width
55cm
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Shoulder width
80cm
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Length
216cm
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Material
50% Thermolite® Pro Yarn, 50% Thermolite® EcoMade yarn
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Rolled size
15 x 7 x 11cm
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- Reactor liners provide a thermal boost to retain heat and warmth. As the core of your sleep system the Reactor liner extends the performance of your sleeping bag in colder conditions.
- Fabric is a blend of 50/50 blend of ThermoLite® Pro and 100% recycled ThermoLite® EcoMade and uses infrared technology for increased insulation
- ThermoLite® Pro technology uses knitted, hollow-core fibres and infrared-absorbing ceramic pigments to reflect your body's heat back for enhanced warmth and comfort
- Knitted fabric provides incredible stretch and freedom of movement and these liners work perfectly with sleeping bags of any shape
- Mummy (Drawcord) version has a drawcord footbox for optimal comfort:
- The drawcord footbox and shoulder openings integrate perfectly with the Free-Flow Zip system in select Sea to Summit sleeping bags
- Open the base drawcord, and you can hitch the liner up and walk - perfect for bathroom breaks
- HeiQ Fresh odour control technology helps keep the liner fresh even after extended use
- Keeps sleeping bag clean on the inside
- Comes with an Ultra-sil stuff sack
