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Foot width
33cm
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Shoulder width
80cm
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Average weight
140g
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Length
206cm
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Material
72% Thermolite® Pro yarn/Thermolite® EcoMade yarn, 28% natural silk
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Rolled size
12 x 6.5 x 10cm
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Our experts haven't reviewed this product yet.
- A liner is the climate core of your sleep system - the Silk Blend liners add warmth and a touch of luxury to your sleeping bag
- Soft, natural fibres, with a less shiny finish than pure silk
- Hollow-core ThermoLite® Pro fibres create a warmth-trapping layer around you, enhanced by infra red absorbing ceramic pigments and combines with silk to create a soft, luxurious sleep environment
- Practical openings in the shoulders to aid with ventilation and to allow you user to stretch your arms out of the liner
- 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
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Foot width
46cm (Regular), 51cm (Long)
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Shoulder width
71cm (Regular), 76cm (Long)
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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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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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Our experts haven't reviewed this product yet.
- 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
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Foot width
59.5cm (Regular), 64.5cm (Long)
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Shoulder width
78cm (Regular), 84cm (Long)
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Compression
8 Litres (both sizes)
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Fill weight
300g (Regular), 343g (Long)
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Fill
ULTRA-DRY Goose Down 750+ Loft, RDS certified
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Fits to
185cm (Regular), 198cm (Long)
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Inner
20D recycled polyester with a non-PFC DWR finish
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Outer
20D recycled polyester, 10D nylon hood and footbox
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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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- Fit tip:
- N/A
- Fit tip:
- N/A
- Relaxed Mummy Fit: A more relaxed yet tapered mummy fit with high thermal performance
- 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 women's 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