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Spark Ultralight Sleeping Bag -18

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Spark Ultralight Sleeping Bag -18

Spark Ultralight Sleeping Bag -18

Sea to Summit’s Spark Ultralight Sleeping Bag is engineered to keep you warm at the lightest weight and smallest compressed size.


Ultralight doesn’t mean cramped; the Spark’s snug mummy shape is designed to keep the heat in, but still gives you enough room to move comfortably after a long day on the trail. Ideal for fast-moving, backcountry explorers who don’t want to carry a gram more than they need.


Suitable for lightweight liners and summer getaways as well as warm, packable bags that’ll see you through chilly winter nights. Designed with premium materials and a fuss-free focus on performance, these bags keep things simple without skimping on quality.


  • 850+ FILL Power, RDS-certified
  • Goose Down with Ultra Dry Down treatment for improved water resistance in damp conditions
  • 10-Denier Nylon shell and lining
  • 10-Denier Nylon waterproof-breathable hood and footbox
  • Mummy Fit: Fitted cut with generous footbox and technical hood, to maximise thermal efficiency and minimise bulk and weight
  • Spark 7C/45F & 1C/30F Primary zip - 1/2 length #5 with zip-plow and two sliders
  • Spark -9C/15F & -18C/0F Primary zip - 3/4 length #5 with zip-plow and two sliders
  • Vertical chest baffles, horizontal baffles lower half and base
  • SPARK 7C sewn through quilted construction throughout
  • SPARK -1C/30Fbox wall baffles top half of bag and sewn through quilted construction lower half. SPARK -9C & -18C box wall baffle construction throughout
  • Spark 7C, -1C & -9C Standard front draft collar
  • SPARK -18C Double draft collars
  • Spark 7 & -1 can't be paired
  • Spark -9 & -18: Pairs with Women's Sea to Summit bags
  • QuiltLock System integrates with StS quilts
  • Best Use: Ultralight Backpacking
  • Comes With: Ultra-Sil compression bag and storage cell
  • Insulation: Ultra-Dry Goose Down 850+ Loft
  • Material(s):10-Denier Nylon shell and lining
  • 10-Denier Nylon waterproof-breathable hood and footbox
  • Shape: Mummy Fit: Fitted cut with generous footbox and technical hood
  • BEST USE: Ultralight adventures
  • PERFORMANCE: Small pack size
  • WEIGHT: 1113g
$238.83

Original: $682.36

-65%
Spark Ultralight Sleeping Bag -18

$682.36

$238.83

Product Information

Shipping & Returns

Description

Sea to Summit’s Spark Ultralight Sleeping Bag is engineered to keep you warm at the lightest weight and smallest compressed size.


Ultralight doesn’t mean cramped; the Spark’s snug mummy shape is designed to keep the heat in, but still gives you enough room to move comfortably after a long day on the trail. Ideal for fast-moving, backcountry explorers who don’t want to carry a gram more than they need.


Suitable for lightweight liners and summer getaways as well as warm, packable bags that’ll see you through chilly winter nights. Designed with premium materials and a fuss-free focus on performance, these bags keep things simple without skimping on quality.


  • 850+ FILL Power, RDS-certified
  • Goose Down with Ultra Dry Down treatment for improved water resistance in damp conditions
  • 10-Denier Nylon shell and lining
  • 10-Denier Nylon waterproof-breathable hood and footbox
  • Mummy Fit: Fitted cut with generous footbox and technical hood, to maximise thermal efficiency and minimise bulk and weight
  • Spark 7C/45F & 1C/30F Primary zip - 1/2 length #5 with zip-plow and two sliders
  • Spark -9C/15F & -18C/0F Primary zip - 3/4 length #5 with zip-plow and two sliders
  • Vertical chest baffles, horizontal baffles lower half and base
  • SPARK 7C sewn through quilted construction throughout
  • SPARK -1C/30Fbox wall baffles top half of bag and sewn through quilted construction lower half. SPARK -9C & -18C box wall baffle construction throughout
  • Spark 7C, -1C & -9C Standard front draft collar
  • SPARK -18C Double draft collars
  • Spark 7 & -1 can't be paired
  • Spark -9 & -18: Pairs with Women's Sea to Summit bags
  • QuiltLock System integrates with StS quilts
  • Best Use: Ultralight Backpacking
  • Comes With: Ultra-Sil compression bag and storage cell
  • Insulation: Ultra-Dry Goose Down 850+ Loft
  • Material(s):10-Denier Nylon shell and lining
  • 10-Denier Nylon waterproof-breathable hood and footbox
  • Shape: Mummy Fit: Fitted cut with generous footbox and technical hood
  • BEST USE: Ultralight adventures
  • PERFORMANCE: Small pack size
  • WEIGHT: 1113g

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Spark Ultralight Sleeping Bag -18 | Millets