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Clearance

Clearance

Sea to Summit

Trek -1 Down Sleeping Bag

Versatile and spacious bag with ULTRA-DRY Duck Down perfect for vehicle-based travels and overnight camping

Smart Buy Down Filled Water Resistant Recycled

Select options

Scales

Packability

Ultra Compact

Compact

Mid Size

Warmth

Summer

Multi-season

Alpine

Weight

Ultralight

Lightweight

Midweight

Product Specifications

Average weight 1119g (Regular), 1253g (Long)

Compression 13 Litres (both sizes)

Fill weight 380g (Regular), 437g (Long)

Fill ULTRA-DRY Duck Down 650+ Loft, RDS certified

Fits to 185cm (Regular), 198cm (Long)

Foot width 65.5cm (Regular), 71.5cm (Long)

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

Outer 20D recycled polyester

Shoulder width 79cm (Regular), 84cm (Long)

Temp rating 3°C comfort rating woman / minus 1°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

• Semi-rectangular fit: Spacious and generous, a roomy fit to give you room to move inside the bag, regardless of your sleeping position
• Sustainable construction with 100% recycled bluesign®-approved 20D polyester shell and lining, a PFC-free water-repellent coating and RDS down
• 650+ Fill Power, RDS-certified, 85% Down Cluster Premium Duck Down with ULTRA-DRY Down treatment for improved water resistance in damp conditions
• Free Flow Zip System for reliable, snag-free operation, to provide superior ventilation and allow the bag to be used as a comforter/quilt:
  • Primary zip: full-length #5 zip with zip-plow and two sliders
  • Secondary zip: half-length #5 zip with zip-plow and two sliders
  • Foot box zip: #5 with two sliders
  • Vertical chest baffles, horizontal baffles lower half and base, box wall baffle construction throughout
  • Shaped hood and oversized zip draft tubes to seal in warmth and keep cold out
  • Fitted front draft collar: scalloped over the neck and oversized at the shoulders
  • Internal pocket for phone / GPS / valuables
  • QuiltLock System allows Sea to Summit quilts to be locked into place over the top of the Trek, giving you modular and versatile sleeping bag
  • Form a snug double sleeping bag by zipping to any women's Sea to Summit sleeping bags
  • Includes lightweight Ultra-Sil compression bag and storage cell

Sea to Summit

Spark Ultralight 7 Down Sleeping Bag

Lightweight down mummy-shaped bag

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 363g (Regular), 387g (Long)

Compression 2 Litres (Regular), 3 Litres (Long)

Fill weight 150g (Regular), 170g (Long)

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

Fits to 185cm (Regular), 198cm (Long)

Foot width 51cm (Regular), 56cm (Long)

Inner 10D nylon with a non-PFC DWR finish

Outer 10D nylon

Shoulder width 77.5cm (Regular), 82.5cm (Long)

Temp rating 11°C comfort rating woman / 7°C Lower comfort rating for men; Temperature rated in accordance with ISO 23537-1:2022

Trusted Opinions

Staff (1) Expert (1)

Thais Bivouac Team Member

If you are looking for an ultralight sleeping bag , you are in the right place. The Spark 7c is incredibly lightweight and packs ridiculously small making it ideal for anyone looking for a minimal summer sleeping bag for fast and light adventures. The mummy shape can feel quite restrictive for some people and the 10D fabric require careful handling to prevent any damage. This option is good for someone who doesn't want to sacrifice high quality down insulation, while keeping their gear to a minimal weight.

Fit tip:

Snug fit

Braden Currie Endurance Athlete

Performance and Comfort in a Lightweight Package

"The Spark 7 is one of the more compact sleeping bags on the market. It is really comfortable with the 3/4 zip and even the little features of the plastic flaring that goes over the zip to stop it from catching the fabric and making it more comfortable for sleeping. I find while this bag is rated to 7 degrees, with a small amount of clothing on during the night it is quite comfortable down to 5 or 6 degrees overnight temps."

Trusted Opinions

Staff (1) Expert (1)

Thais Bivouac Team Member

If you are looking for an ultralight sleeping bag , you are in the right place. The Spark 7c is incredibly lightweight and packs ridiculously small making it ideal for anyone looking for a minimal summer sleeping bag for fast and light adventures. The mummy shape can feel quite restrictive for some people and the 10D fabric require careful handling to prevent any damage. This option is good for someone who doesn't want to sacrifice high quality down insulation, while keeping their gear to a minimal weight.

Fit tip:

Snug fit

Braden Currie Endurance Athlete

Performance and Comfort in a Lightweight Package

"The Spark 7 is one of the more compact sleeping bags on the market. It is really comfortable with the 3/4 zip and even the little features of the plastic flaring that goes over the zip to stop it from catching the fabric and making it more comfortable for sleeping. I find while this bag is rated to 7 degrees, with a small amount of clothing on during the night it is quite comfortable down to 5 or 6 degrees overnight temps."

Features

• Mummy Fit: Fitted cut with generous anatomical footbox and technical hood, to maximise thermal efficiency and minimise bulk and weight
• 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, sewn-through baffle construction throughout
• Technical fitted hood with soft touch adjustment, extra deep for cosy-like feel
• No draft tube
• QuiltLock System allows integration with Sea to Summit quilts
• 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

Trek -1 Down Sleeping Bag

Spark Ultralight 7 Down Sleeping Bag