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  • Sea To Summit Ultra-Sil Compression Sack Yellow
  • Sea To Summit Ultra-Sil Compression Sack Blue
  • Sea To Summit Ultra-Sil Compression Sack Green

Available colors

  • Sea To Summit Ultra-Sil Compression Sack Yellow
  • Sea To Summit Ultra-Sil Compression Sack Blue
  • Sea To Summit Ultra-Sil Compression Sack Green

Sea To Summit Ultra-Sil Compression Sack

$26.95 - $39.95

Free shipping on orders over $50*

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    • Yellow, XS/6L
        $26.95
    • Blue, XL/30L
        $39.95
    • Green, XL/30L
        $39.95
    in stock
    4.5 5 17

    17 Reviews

    Details

    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.
    • Item #STS0075

    Tech Specs

    Material
    30D Siliconized Cordura
    Volume
    XS 240 cu in, S 430 cu in, M 580 cu in, L 960 cu in, XL 1400 cu in
    Dimensions
    [XS ] 5.5 x 14 in, [S ] 7 x 16 in, [M ] 8 x 18 in, [L ] 9 x 20 in, [XL ] 10.5 x 23 in
    Claimed Weight
    XS 2.4 oz, S 2.6 oz, M 3 oz, L 3.3 oz, XL 4.1 oz
    Recommended Use
    backpacking, camping, expeditions

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Perfect for a bulky sleeping bag

    • Familiarity:I've used it once or twice and have initial impressions

    I bought 2 sizes of this bag to find the right fit for my Marmot Cloudbreak 20 long. The Medium compression sack fit my sleeping bag perfect. It was easy to stuff and then compress. Probably could have gotten it a little bit smaller but was just testing out the general fit. Definitely would have been tough to get into the Small compression sack

    Perfect for a bulky sleeping bag

    It's not only just a compression sack...

    I love this compression sack, I use it for my sleeping bag. But it can do much more than hold your sleeping bag tightly, it can be used as a light weight expeditionary backpack for short excursions when you are backpacking! The compression straps can adjust to go around your arms and it can hold a small amount of things for exploring territory when you don't need your heavy backpacking set up. I use it as a day pack to summit a 14er in Colorado, or get water in Grand Gulch Utah, or summit Half Dome in the Yosemite.

    It's not only just a compression sack...

    Does the trick

    • Familiarity:I've used it several times

    This sack is light and packs down nice. Basically it does its job perfectly. I bought the 14L M. I used it for a 20 degree montbell ultralight down bag. S would have done the trick. If anything I'd say it would be more pack friendly if it was a little less wide and a bit longer.

    Quality Stuff

    • Familiarity:I've used it once or twice and have initial impressions

    I bought this while on the text line with a rep after asking for a recommendation to stuff the Northface Basalt Large sleeping bag.



    I find the sizing of Compression Bags utterly confusing. Sml, Med, Lge. Litres, Inches etc.



    This works perfect for my bag and the amount of compression is impressive. It extremely lightweight and thin material but seems to be very well constructed as I tend to pull hard on the straps.

    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.

    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.

    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.

      Solid

      • 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.

      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.

        Unanswered Question

        Hi- my husband and I have the Slumberjack -20 sleeping bag and are wondering if any of these would fit such a bulky bag. Also, how much can we realistically expect it to compress down in these? It's a great bag, especially for the price, but extremely bulky, especially for some of trips we are planning for the future. It would be awesome if we could use them but make them much smaller and thus easier to pack and haul around! Thank you!

        is it waterproof?

        What size is best for The North Face Superlight Sleeping Bag: 0 Degree Down? (Regular size) Thanks for your help!

        What size compression bag would I use for the following?

        Big Agnes Big Creek Sleeping Bag: 30 Degree Synthetic

        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?

        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?

        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?

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

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

        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!

        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

        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
(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.
        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?

        Hey...Are these waterproof?

        Hey...Are these waterproof?

        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.