Code: WINTER20

Description

Open up some pack space with this stuff sack.

Make your sleeping bag, down jacket, or clothing smaller and more compact with the Sea To Summit Ultra-Sil Compression Sack. This ultralight stuff sack features four webbing cinch straps to compress your gear and make more room in your bag or duffel. The flip-top lid prevents straps from tangling and the slick finish makes for easy packing.

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Sea To Summit Ultra-Sil Compression Sack

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Here's what others have to say...

5 5

I've purchased 3 of these now.

  • Familiarity: I've put it through the wringer

I now own 3 Sea To Summit Ultra-Sil compression stuff sacks. Or I should correct that and say I now own two, I "loaned" one to my hiking buddy to use as a stuff sack for his Marmot sleeping bag. Somehow I don't think I'll get it back.
There are three things I love about these Sea to Summit stuff sacks:
1. They are incredibly light compared to other similarly sized stuff sacks and lighter than the "claimed weight" - on my postal scale the size small weighs 2.2 ounces and the size medium, 2.6 ounces.
2. The workmanship is impeccable. Although made with lightweight fabrics and webbing, I've never seen so much as a frayed stitch on any of my stuff sacks.
3. They start large (bigger than you expect from the specs) and easy to cram your "whatever"* in (*clothes, sleeping bag, etc) - then you can leverage the straps to compress the load down to the smallest possible size (i.e. when what's inside is compressed to where it's as hard as a rock).
I use the size "small" compression sack for my Nemo Nocturne 15 sleeping bag and I recently purchased a size "medium" sack for my Mountain Hardware Big Bang SL -20 bag, which is a HUGE sleeping bag. The Sea to Summit sack compresses down to little more than half the size of the stuff sack that came with the bag (and that stuff sack also weighs more than 5 ounces).
All in all this is a great product, very typical of all products I have owned from Sea to Summit.

4 5

Not as durable as I'd like

  • Familiarity: I've put it through the wringer

This compression sack is wonderfully lightweight and compressed my sleeping bag well. It's also slippery sil-nylon which makes it easier to slide in and out of a backpack. Unfortunately, the top seam blew out after only two seasons of light to moderate use. I can still use it but my sleeping bag poofs out a little through the hole (and it's now less water resistant because of the hole.) It's a little disappointing because I don't believe I mistreated it at all. Still, I like it enough that I might buy another one someday and hope the same thing doesn't happen all over again.

I have Western Mountaineering Puma Super...

I have Western Mountaineering Puma Super MF Sleeping Bag: -25 Degree Down what size of stuff sack do I want?

Responded on

I'm guessing a size medium will work just fine. That's what I use for my Mountain Hardwear Big Bang SL - 20 bag, which is a 650 fill down bag and therefore probably not as compressible as your WM bag.

I have a 20* bag that weighs 2# 15oz and...

I have a 20* bag that weighs 2# 15oz and measures 32"x80" any suggestions on compression bag size?

Responded on

Generally speaking you want a compression bag that is sized to match the original "stuff size" of your sleeping bag. If you look up your sleeping bag online, they usually list "stuff size" ... or you could just stuff it in its sack and then measure.

5 5

Good Compression Sack

I actually bought this by accident thinking it was the waterproof version in the small size for stuffing my clothing. I'm happy to say that I'm really glad I bought it because it's worked out very well. It's quite durable and water resistant. I was hiking for 4 hours in the rain and my bag was soaked through. Luckly all my sleeping bag and clothes were in eVent dry sacks. I did keep some clothing in this and they were bone dry as well. It's not waterproof but seemed to do the trick for me. Very happy with the purchase.

What size sack do I require for a Marmot...

What size sack do I require for a Marmot Never Summer Membrane 0 Degree sleeping bag?

Responded on

I agree the medium is the way to go. I have the 0 degree lithium and it fits well in the Medium.

5 5

Delivered what it promised.

It was supposed to be a good compression sack. It was a good compression sack.

5 5

compressed

  • Gender: Male
  • Familiarity: I've used it several times

this compression sack does what it is suppsed to and holds up under pressure..even in Mongolia

5 5

Solid

  • Gender: Male
  • Familiarity: I've put it through the wringer

I have a small for a 32 degree down bag and a XL for a 15 synthetic. Both compress the bags as small as possible. Whatever few ounces these way are made up by having more pack space and thus less need for a bigger and heavier bag. I've beaten mine up good and sat on them and they are solid. I also stuff these with clothes and use as a pillow when backpacking with a fleece pillow case over it. Going to try an eVent model with my new down bag but these are great.

What size do I need for a Marmot Plasma...

What size do I need for a Marmot Plasma 15F Regular Sleeping Bag?

Responded on

It's a tight fit in the small--the drawstring will barely close. Go for the medium.

Responded on

I agree the XS will be way too small. I have a 0 degree Lithium and it goes into the Medium. I have a 30 degree stoic down bag and it will just barely fit into the small. I'd go for the medium.

Hi! For a Marmot Trestles 15 Sleeping Bag:...

Hi! For a Marmot Trestles 15 Sleeping Bag: 15 Degree Synthetic Long X WIDE, which size should I get?. How small would it get? Thanks!

Responded on

For this big Sleeping bag...I'll take the XL

5 5

Good compression sack

The XS & Small sizes are great for just about anything that would be loose in your hiking backpack. I use them for extra socks/clothes/etc...compresses way down, makes way more space in the pack & lets you put the weight of all your clothes in one confined spot. 2 thumbs up.

How do I determine sizing?
I have 2 Marmot...

How do I determine sizing?
I have 2 Marmot Arroyos- one regular, one long

Best Answer Responded on

I have the Sea to Summit eVent compression sack
(http://www.backcountry.com/sea-to-summit-event-compression-dry-sack), size small 10L, and my Arroyo regular fits in there with about 5" room left in the sack, definitely enough to fit the long Arroyo too. The regular should also fit fine in the XS, or if you want to play it safe, just go with 2 smalls.

Picture is the regular Arroyo inside the small seaToSummit eVent.

I have the Sea to Summit eVent compression sack <br/> (http://www.backcountry.com/sea-to-summit-event-compression-dry-sack), size small 10L, and my Arroyo regular fits in there with about 5" room left in the sack, definitely enough to fit the long Arroyo too. The regular should also fit fine in the XS, or if you want to play it safe, just go with 2 smalls. <br/>  <br/> Picture is the regular Arroyo inside the small seaToSummit eVent.
4 5

Good Deal

This is a great compression sac that is easy to use. I use a small for my 20 degree down sleeping bag and it compresses down to about 7 x 8in. the only complaint is that its not water proof. A great buy!

Unanswered Question

I've got to compress an extra long twin...

I've got to compress an extra long twin sx comforter to carry in a bag to Europe. Does anyone know what sz I should get?

5 5

compression to the 1/3 size

standard compression sack
great durability in all sizes
able to torque and not break connection points
five gold stars
keep stuff somewhat dry

Hey...Are these waterproof?

Hey...Are these waterproof?

Responded on

Because of the Silicone coating, they're water resistant, if you want waterproof- usually stuff sack aren't the first choice. What you might be looking for is a dry bag. Sea to Summit makes a great one called the eVac dry sack- amazing.

Is the picture right? Doesn't seem like...

Is the picture right? Doesn't seem like it.

Best Answer Responded on

its not, see the photo in the out-of-stock versions below.