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Deal.ai › Sea to Summit › Pack Sacks
Sea to Summit
Sea to Summit Lightweight Compression Sack 35l

Sea to Summit Lightweight Compression Sack 35l

Best price now

$49.95at BackcountryChecked 11 h ago

Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

  • Lowest price today: $49.95 at Backcountry (checked Nov 14, 2026).

Our take on the Sea to Summit Lightweight Compression Sack 35l

The Sea to Summit Lightweight Compression Sack is a nylon stuff sack with a four-strap compression system that squeezes bulky gear down to a fraction of its packed size. The 35L version is the largest in the line, sized for a sleeping bag, a puffy jacket and spare layers in one bundle. It doubles as a dry sack with a roll-top closure and fully taped seams, so it keeps contents dry in rain or on a wet boat deck. Against plain stuff sacks it compresses harder and seals better; against heavier expedition dry bags it trades some abrasion resistance for much lower weight.

Best forBackpackers packing a sleeping bag and puffy layersBikepackers and kayakers who need gear to stay dryCanoeists and rafters stowing soft gearTravelers compressing bulky clothing in a suitcase
Pros
  • Four compression straps pull evenly and shrink loads hard
  • Roll-top closure with taped seams keeps water out
  • Light nylon fabric adds little weight to a pack
  • 35L swallows a sleeping bag plus clothing
  • Doubles as a dry bag, so one item does two jobs
Cons
  • Thin fabric is less abrasion-resistant than heavier dry bags
  • Compression straps can be fiddly to cinch evenly
  • Not submersible; it is a dry sack, not a dive bag
  • Large packed bundle can be awkward at the bottom of a small pack

Sea to Summit Lightweight Compression Sack 35l prices at every store

  • BackcountryNew

    In stock

    $49.95+ $6.99 shippingChecked 11 h ago
    Visit Backcountry

Store links may earn us a commission. Price via Klarna.

Sea to Summit Lightweight Compression Sack 35l price history

Lowest price we've seen: $49.95 on Nov 14 at Backcountry. Tracked across 1 store since Nov 14.

What reviewers say

Owners of the Lightweight Compression Sack line praise how much bulk it removes and how well it keeps gear dry. Most criticism centers on the thin fabric and the fuss of tightening the straps.

What people mention
  • CompressionPraisedOwners say the four straps pull a sleeping bag down to a much smaller bundle than a plain stuff sack.
  • WaterproofingPraisedReviewers report gear staying dry through rain and splashes with the roll-top closed properly.
  • BuildMixedThe nylon is light and packs small, but some owners find it thin enough to snag on rough surfaces.
  • StrapsCriticisedSeveral owners say the compression straps are fiddly to tighten evenly.
  • WeightPraisedBuyers like that the sack adds almost nothing to pack weight.

About the Sea to Summit Lightweight Compression Sack 35l

The Sea to Summit Lightweight Compression Sack is a waterproof pack sack that works as both a compression sack and a dry sack. It has a 35 L volume.

It is made of nylon (polyamide).

Type
Compression sack, dry sack
Volume
35 L
Waterproof
Yes
Material
Nylon, polyamide
Width
6.0 in
Depth
29.0 in

Specifications

Width (")
6.0Source
Waterproof
YesSource
Color
Green, WhiteSource
Volume (gal)
35.0Source

Questions and answers

Is the 35L size right for a sleeping bag?
Yes. 35L fits most three-season sleeping bags with room for a puffy jacket or spare layers. A bulky winter bag may need the next size up.
Is it fully waterproof?
It is a dry sack, not a submersible bag. The roll-top closure and taped seams keep out rain and splashes, but do not dunk it.
How is it different from a plain stuff sack?
The four compression straps squeeze the load far smaller than a drawstring stuff sack, and the roll-top closure seals out water.
Can it be used as a pillow?
Yes. Many owners stuff clothing inside and use the compressed bundle as a camp pillow.
What material is it made of?
It is made of lightweight nylon and polyamide fabric with a waterproof coating and taped seams.
Where is the Sea to Summit Lightweight Compression Sack 35l cheapest?
At Backcountry, for $49.95, as of our latest check.

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Depth (")
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Material
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