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Deal.ai › Sea to Summit › Sleeping Bags
Sea to Summit
Sea to Summit Trek Down Sleeping Bag

Sea to Summit Trek Down Sleeping Bag

4.7(141 ratings)

Best price now

$241.08at InWild USObserved at 9:22 AM

34% under what the other stores charge

Compared across 16 stores. Prices are checked against each store and labelled with when.

Visit InWild US

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Price facts

  • Lowest price today: $241.08 at InWild US (checked Nov 9, 2026).
  • Checked at 16 stores.

Our take on the Sea to Summit Trek Down Sleeping Bag

The Trek is Sea to Summit's three-season down bag for campers and casual backpackers who want warmth without a mummy bag's squeeze. It uses 650+ fill-power RDS-certified duck down in a tapered-rectangular cut, so side sleepers get room to bend their knees. The Free-Flow zip system lets you open the foot and shoulder areas separately for venting on mild nights. It is heavier and bulkier than premium 800-fill mummy bags, but it undercuts them on versatility and roominess.

Best forSide sleepers who feel confined in mummy bagsThree-season car camping and hostel travelCasual backpackers on short tripsCouples wanting a roomier cut
Pros
  • Tapered-rectangular shape gives side sleepers room to move
  • Free-Flow zips vent the foot and shoulder independently
  • 650+ RDS-certified duck down is a responsible, warm fill
  • Hood and draft tube seal in heat on cold nights
  • Available in Regular and Long for taller sleepers
Cons
  • At about 1.7 lb it is heavier than comparable mummy bags
  • Packs to roughly 1.2 gallons, bulky for a small pack
  • 650 fill power is below the 800+ down on premium rivals
  • Rectangular cut is less thermally efficient per ounce

Sea to Summit Trek Down Sleeping Bag prices at every store

  • InWild USNew

    In stock

    $241.08Observed at 9:22 AM
    Visit InWild US
  • BananaFingersNew

    In stock

    $263.51Observed at 9:22 AM
    Visit BananaFingers
  • EpicTVNew

    In stock

    $263.51Observed at 9:22 AM
    Visit EpicTV
  • OliunìdNew

    In stock

    $263.51Observed at 9:22 AM
    Visit Oliunìd
  • Academy Sports + OutdoorsNew

    In stock

    $349.00Observed at 9:22 AM
    Visit Academy Sports + Outdoors
  • Sea to SummitNew

    In stock

    $364.00Observed at 9:22 AM
    Visit Sea to Summit
  • REINew

    In stock

    $364.00Observed at 9:22 AM
    Visit REI
  • DICK'S Sporting GoodsNew

    In stock

    $364.00Observed at 9:22 AM
    Visit DICK'S Sporting Goods
  • Backcountry.comNew

    In stock

    $364.00Observed at 9:22 AM
    Visit Backcountry.com
  • Public LandsNew

    In stock

    $364.00Observed at 9:22 AM
    Visit Public Lands
  • Appalachian OutfittersNew

    In stock

    $364.00Observed at 9:22 AM
    Visit Appalachian Outfitters
  • Cabela'sNew

    In stock

    $364.99Observed at 9:22 AM
    Visit Cabela's
  • Bass Pro ShopsNew

    In stock

    $364.99Observed at 9:22 AM
    Visit Bass Pro Shops
  • Academy SportsNew

    In stock

    $379.00+ $12.28 shippingObserved at 9:22 AM
    Visit Academy Sports
  • BackcountryNew

    In stock

    $394.00Free shippingObserved at 9:22 AM
    Visit Backcountry
  • eBayPre-owned

    Availability unknownSold by jar-9855 (100% positive, 53 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $190.00+ $14.42 shippingObserved at 9:22 AM
    Visit eBay
  • eBayNew

    Availability unknownSold by danivfis_0 (95.7% positive, 63 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $287.80Free shippingObserved at 9:22 AM
    Visit eBay

Store links may earn us a commission. Some prices via Klarna.

Sea to Summit Trek Down Sleeping Bag price history

Lowest price we've seen: $241.08 on Nov 9 at InWild US. Tracked across 15 stores since Nov 9.

What reviewers say

  • 4.7 / 5141 ratings

Owners rate it highly, praising the roomy cut, the flexible zips and the warmth for a 30°F bag. The main complaints are packed size and weight against lighter mummy bags.

What people mention
  • Fit and roomPraisedSide sleepers say the tapered-rectangular cut lets them bend their knees without fighting the bag.
  • Zipper systemPraisedOwners like being able to open the foot and shoulder sections separately to vent heat.
  • WarmthMixedMost find it warm for three-season use, but some say it is not enough below freezing.
  • Packed sizeCriticisedReviewers note it takes up more pack space than mummy bags of similar rating.
  • WeightCriticisedAt around 1.7 lb it is heavier than lighter down mummy rivals.
  • Build qualityPraisedOwners describe the shell, liner and stitching as durable and well finished.

Specifications

Color
Snorkel Blue
Temperature Rating
30°F
Closure Type
Zipper (Free-Flow Zip System)
Pattern Type
Solid
Size
Regular, Long
Count
1
Item Weight
1119 g
Fill Type

Questions and answers

Is the Trek warm enough for freezing nights?
It is rated to 30°F, which suits three-season camping. Below freezing, most sleepers will want a warmer bag or an added liner.
How does it compare with a mummy bag?
It is roomier and easier for side sleepers, but heavier and bulkier than a mummy bag with the same rating.
What is the Free-Flow zip system?
Separate zips let you open the foot and shoulder areas independently, so you can vent heat without opening the whole bag.
Which size should I get?
The Regular fits most sleepers up to about 6 feet. Choose the Long if you are taller or want extra shoulder room.
Is the down responsibly sourced?
Yes. The duck down is RDS-certified, meaning it is traced to responsible sourcing.
What comes in the box?
The bag and a stuff sack. A storage sack for long-term loft is not included.
Where is the Sea to Summit Trek Down Sleeping Bag cheapest?
At InWild US, for $241.08, 34% under what the other stores charge, as of our latest check.
What do buyers say about the Sea to Summit Trek Down Sleeping Bag?
Rated 4.7 out of 5 from 141 ratings.
Where can I buy the Sea to Summit Trek Down Sleeping Bag?
16 stores we checked sell it, including Academy Sports, Backcountry, eBay, InWild US, BananaFingers.

Stores we've priced the Sea to Summit Trek Down Sleeping Bag at

  • Academy Sports + Outdoors deals and prices
  • Backcountry.com deals and prices
  • dickssportinggoods.com deals and prices
  • REI deals and prices

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Duck down
Fill Power
650+
Material Type
Polyester (liner), Recycled 20D polyester (shell)
Material Certifications
RDS-certified
Age Group
Adult
Occasion
Camping
Typical Users
Campers, Casual backpackers, Side sleepers
Fit Style
Tapered-rectangular
Organic
No
Shape
Tapered-rectangular
Design Highlights
Stuff Sack, Draft Tube
Length
6 ft 6 in (198 cm)
Width
66.1 inches (shoulder girth, Long)
Outer Material
NylonSource
Lower Temperature Limit (°F)
30Source
Compressed Volume (gal)
1.22Source
Filling
DownSource