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Sea to Summit

Ascent -9 Regular Down Sleeping Bag

Designed for comfort and adaptability and suited to a wide range of adventures in cold conditions

Expert Pick Down Filled Water Resistant Lightweight

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Scales

Packability

Ultra Compact

Compact

Mid Size

Warmth

Summer

Multi-season

Alpine

Weight

Ultralight

Lightweight

Midweight

Product Specifications

Average weight 1020g (Regular), 1157g (Long)

Compression 13 Litres (both sizes)

Fill weight 540g (Regular),617g (Long)

Fill ULTRA-DRY Goose Down 750+ Loft, RDS certified

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

Foot width 59.5cm (Regular), 64.5cm (Long)

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

Outer 20D recycled polyester

Shoulder width 78cm (Regular), 84cm (Long)

Temp rating minus 2°C comfort rating woman / minus 9°C Lower comfort rating for men; Temperature rated in accordance with ISO 23537-1:2022

Expert Opinion

If you are looking for a very decent quality sleeping bag that is lightweight but don't want to give up on comfort, the Sea to Summit Ascent range is a fantastic place to look!

Though the shape of the bag still tapers at the bottom, the sleeping bag is much more rectangular than most mummy bags. The Free-Flow zip provides flexibility with temperature adjustment whether you want to use you bag as a quilt, stick your feet out or stick out your arms to read a book. The high quality 750+ down fill allows this bag to remain decently lightweight while still performing in cold temperatures. When going with a higher warmth rating like the -9 it usually means you might be using it on colder, longer nights where comfort will be key to a good sleep. The -9 would be a good choice for someone going on adventures all year long.

Fit Tip: Nice and roomy, good for side sleepers or people who tend to move around in their sleep.

Thais - Bivouac Team Member

Features

• 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

Sea to Summit

Trek -9 Women's Down Sleeping Bag

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

Down Filled Insulated Water Resistant

Select options

Scales

Packability

Ultra Compact

Compact

Mid Size

Warmth

Summer

Multi-season

Alpine

Weight

Ultralight

Lightweight

Midweight

Product Specifications

Average weight 1612g (Regular), 1800g (Long)

Compression 26 Litres (both sizes)

Fill weight 800g (Regular), 925g (Long)

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

Fits to 170cm (Regular), 185cm (Long)

Foot width 60cm (Regular), 65.5cm (Long)

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

Outer 20D recycled polyester

Shoulder width 72.5cm (Regular), 77.5cm (Long)

Temp rating minus 3°C comfort rating woman / minus 9°C Lower comfort rating for men; Temperature rated in accordance with ISO 23537-1:2022

Expert Opinion

Our experts haven't reviewed this product yet.

Features

• Semi-rectangular women's-specific fit is designed for spacious comfort when you're camping or traveling: slightly narrower at the shoulders and roomier through the hip area. Regardless of the position you sleep in (figure-four, on your side or on your stomach), this shape provides a significantly higher level of comfort by giving you the room to move without compressing the insulation.
• Women's sleeping bags have additional insulation compared to unisex bags, positioned using different body mapping for thermal performance exactly where it is needed
• Sustainable construction with 100% recycled bluesign®-approved 20D polyester shell and lining, a PFAS-free water-repellent coating and RDS down
• 650+ Fill Power, RDS-certified, 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
  • Generous fitted hood with two soft touch adjustments; fits a Sea to Summit regular pillow
  • Fitted front draft collar: scalloped over the neck and oversized at the shoulders
  • Single, synthetic-filled, draft tube along the top of all zips
  • Internal pocket for phone / GPS / valuables
  • Form a snug double sleeping bag by zipping to other Sea to Summit sleeping bags
  • Includes lightweight Ultra-Sil compression bag and storage cell

Ascent -9 Regular Down Sleeping Bag

Trek -9 Women's Down Sleeping Bag