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  • Sea To Summit - eVAC Dry Sack - Blue
  • Sea To Summit - eVAC Dry Sack - Grey

Sea To Summit eVAC Dry Sack

$19.95 - $44.95

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    • Blue, 35L
    • Blue, 5L
    • Blue, 65L
    • Blue, 8L
    • Blue, 13L
    • Grey, 35L
    • Grey, 3L
    • Grey, 5L
    • Grey, 65L
    • Grey, 8L
    • Grey, 13L
    • Grey, 20L

    39 Reviews


    The dry sack from the future.

    The Sea-to-Summit eVAC Dry Bag uses waterproof and breathable eVENT fabric to keep your gear bone dry. It’s like a compression sack, but the design allows you to simply push excess air out the bottom eVENT panel as you roll down the top. No more compression straps, no more busted seams from reefing too hard on said straps. Oh, and get this: they’re oval, so they won’t roll off the deck and float down the river without you.
    • Item #STS0043

    Tech Specs

    waterproof nylon, Hypalon, eVent
    [ 3 L] 11 x 7 x 4 in, [ 5 L] 15 x 7 x 4 in, [ 8 L] 17 x 8 x 5 in, [ 13 L] 20 x 9 x 6 in, [ 20 L] 24 x 11 x 7 in, [ 35 L] 28 x 13 x 8 in, [ 65 L] 33 x 15 x 10 in
    [3 L ], [5 L ], [8 L ], [13 L ], [20 L ], [35 L ], [65 L ]
    Backpack Straps
    Claimed Weight
    (3L) 1.5 oz, (5L) 1.7 oz, (8L) 2 oz, (13L) 2.4 oz, (20L) 3 oz, (35L) 4 oz, (65L) 5.2 oz
    Recommended Use
    kayaking, river rafting, boating, camping
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Awesome Bag

    • Familiarity: I've put it through the wringer

    I have used this on a few river trips and traveling around in Costa Rica and it is great. I got a bigger version to keep all my clothes dry and the smallest version to keep my phone and spare battery chargers dry and it works great!

    Does its job. Keeps stuff dry.

    • Familiarity: I've used it several times

    We bought this sack for the paddle board and kayak. It is super lightweight and packs up pretty small. I'm a little worried about the overall durability because it is such a thin and lightweight material but it seems to be holding up really well to normal use and abuse of the lakes and rivers.

    LOVE IT!

    • Familiarity: I've used it several times

    I keep all of my must stay dry items in this bag (sleep system/ layers/ anything down). It has been set in the snow/ wet conditions, and performed beautifully. Nothing has even gotten damp in here. I have not submerged it or exposed it to water for long periods of time, but in regular backpacking/mountaineering applications it has worked flawlessly. The air release system is slow but effective, and i have had no issues with moisture on the vent portion.

    Almost as compressible as compression

    • Familiarity: I've used it several times

    These are almost as compressible as a compression stuff sack, less money (in some cases), and waterproof! I bought several of these!

    13 L of sleeping bag security

    • Familiarity: I've used it several times

    I bought the 13L sack because I needed to ensure my bag stayed dry while hauling it up the wall. This thing couldn't be easier to pack and does it's job as advertised.

    Massive 65L

    You could purt near bivouac in this bad boy!

    That's a Marmot Xenon sleeping bag and an English Springer Spaniel for scale.

    The Kimber dog was not impressed when I tried it... but she totally fits in the 65L.

    Massive 65L

    Recommended for everything but...

    • Familiarity: I've put it through the wringer

    I have owned several sizes of the eVAC Dry Sack over the years and really love them. The ease of compression is great and they are super light. I believe their application is the key to their success. I use them for keeping backpacking packs and bicycle panniers organized, where some added waterproofness is beneficial. I also use them for storing and hanging food when it's warranted. I would recommend using something more bomber if you expect the sack to be submerged in water or exposed to abrasion for extended periods of time.

    Waterproofs my daypack for cheap

    • Familiarity: I've put it through the wringer

    I bought the Sea to Summit eVAC dry sack in the 20L size to line my daypack in the event of heavy rain or a river crossing or wet canyoneering. Works like a charm.

    The weight of the sack is negligible. So, there's no reason not to carry it when there's a chance I might need it.

    The eVAC integrated one-way valve is a neat addition, kinda gadgety, but ultimately unnecessary for purging the sack and reducing it's space to a minimum if you know the technique for doing so to a river bag that doesn't have one of these valves.

    I've read complaints about the sack fabric's lack of durability. It sure isn't Codura. But since my use is mostly limited to inside another bag, I'm not worried. I'd use a burlier stuff sack, like the Outdoor Research Durable Stuff Sack which I also have, for applications involving abrasion and what not. But it will add ounces to the kit, so it's a trade-off.

    For light weight, inexpensive, waterproof protection, I'm a fan of the Sea to Summit eVAC dry sack

    Waterproofs my daypack for cheap

    Spend Your Money on Something Else

    • Familiarity: I've put it through the wringer

    For any whitewater kayaker such as myself, a dry bag of sorts is a necessary piece of equipment for taking gear, clothes, lunch, etc down river. Because this vital piece of equipment is used on almost any kayaking excursion, a dry bag (or "dry sack" in this case) should be able to hold up to regular use and at least a minimal amount of abuse.

    This past Summer I received a Sea to Summit Evap Dry Sack as a gift and initially it worked pretty well despite my concerns about it being so thin. This usefulness was very short-lived; however, and after not even a full summer of kayaking, my "Dry Sack" already leaks like a sieve. Just from the relatively small amount of water that leaks into my kayak over the course of the day, whatever I put in the dry bag will either be damp or fully soaked depending on whether or not i'm lucky. Full submersion with this dry bag is out of the question.

    For whitewater or any other boating/nautical purposes, these things are absolute garbage and a huge waste of hard-earned money. The ONLY reason I am giving this a 2 star rating instead of 1 is because
    backpackers that use these dry bags may find them desirable because they are very light-weight.

    Bottom line: buy a different dry bag. Pretty much anything will be better than this.

    Nice and waterproof and compact

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

    This kept my food and electronics dry in a couple wet slot canyons in Utah. The vent feature is great to keep things compact in your pack.

    Awesome way to pack with weatherproofing

    • Familiarity: I've put it through the wringer

    I have several different dry back but it is perfect way to purse the air and pack small while keep weatherproof is awesome.

    Easy to purse the air out and has been great to take to Paddle Boarding in the ocean, river and lake


    • Familiarity: I've used it several times

    My sleeping bag fits into here perfectly. The material seems sturdy and not too flimsy like many other dry sacks I've checked out. I'm using this currently and place my sleeping bag at the bottom of my pack. It is easy to roll down three times and snap closed. good product would get another if i needed

    update: 2 years later review - my bag is still holding up and doing well. It survived a lot of hard use in Washington as well as the California desert areas of the PCT. I lined my backpack with a trash compactor bag -and then had this bag as well as my food bag and a smaller bag for keeping my tech plugs and camera in. - All stayed dry and well. I've been pleased with my set up.

    More better than good!

      Now that I have upgraded my stuff sacks to lighter and better ones,

      ( my old stuff were Chiounards which were pretty hard to beat)

      I have more confidence in keeping my essentials dry.

      Nice and dry

      • Familiarity: I've put it through the wringer

      I had originally gotten this bag for my sleeping bag but decided to upgrade to the compression version. I use this bag for my clothes and outer layers and it works great for that, You can get most of the air out and it has a little compression capability which is nice for packing in a pack. It keeps things dry so it is doing its job.

      Dry sleeping bag!

        I'm pretty sure this is my favorite stuff sack! I have the 13L size and I just keep my sleeping bag in it when I'm backpacking. I can attest to the fact that it is waterproof! This stuff sack lets you compress the contents of it by simply squeezing excess air out (and it's lighter than a normal compression sack). I've been using mine for a year and it still looks new!

        Not durable

        • Familiarity: I've put it through the wringer

        I have had this dry bag for 3 years now and this past year it started tearing in areas creating small holes. I was on a canoe trip and I threw it out of my tent. It hit a rock and the rock ripped straight through the fabric. For the rest of the trip I used a SealLine Baja bag and the material felt much tougher and worked better. I will definitely buy one for next summer.The buckle on that bag is also much tougher.

        It's magic

        • Familiarity: I've used it several times

        I'm not sure how this thing works, but I'm 95% sure it has to do with magic. I have the 20L bag and I can fit my down sleeping bag and big agnes sleeping pad inside of it pretty easily. I can compress it down, throw it in my bag, and keep everything dry, compressed, and organized. The only reason I didn't give it 5 stars is because I'm not in love with it yet.

        The package says "Not Submersible" - but waterproof??? I am going to be jumping into and swimming potholes and I want a warm dry sleeping bag and dry food when I lay down at night. I need to be absolutely positively sure this will keep my stuff dry as if all of my contents were underwater for extended periods of time. Thanks!

        Best Answer

        Don't count on these guys. I only use these for packing stuff inside my backpack to protect against downpours when I travel. There are better choices. The ones I own have been good but they developed air holes fairly quickly- that's why I don't count on them. The material is too thin. There is a thicker material version called Big River that really does work.

        In hiking a canyon that may have deep pools...

        In hiking a canyon that may have deep pools of water that require a swim, will this bag keep camera, binoculars, wallet, etc. dry?

        Best Answer

        Yes, it will. Any time I do a canyon, I always keep my extra valuable electronics in one additional waterproof layer--typically a ziplock or a bread bag. Dry sacks sometimes fail--they get caught on something, there's a small leak, I just feel better having one extra layer of safety there.

        Hope that helps.

        What size for a DSLR (Nikon with longish...

        What size for a DSLR (Nikon with longish lens)?

        Many thanks!

        I can fit a D3100 with an 18-55 in a 5L with plenty of room to spare, so you could probably manage with a 3L if you're just looking to put in a similar sized camera/lens combo. It is useful to pack the lens and body separately if you don't mind the extra lens and body cap, and also if you're not going to be taking it out every 10 minutes.

        I would recommend looking into S2S ultra sil dry bags. The eVac is a little more expensive because of the eVent material which for a camera you really don't need anyway. The ultra sil dry bags do just as good of a job and weigh less

        So I'm going on a 7 day survival trip next...

        So I'm going on a 7 day survival trip next month, and it's been almost 10 years since I've gone camping so I'm getting all new gear. I've found a sleeping bag and mat that I'd take along, now I'm just looking into dry sacks that would be able to hold my belongings. The people I'm going with were reccomending using 2-3 dry sacks (1 for the sleeping bag, 1 for the sleeping mat, extra change of clothes, and other small things that can't get wet like camera etc.) What Litre bag should I look into getting?
        If it helps I'm getting item #MHW1203 for sleeping bag and #CAS0504 for sleeping pad. Don't really want to have 1 HUGE dry sack to stuff everything into as it could be easier to consolidate everything into a few.

        Best Answer

        The stuff size for your sleeping bag of choice is 8 x 16 in. So, based on that, probably a 13L Dry Sack to stuff it in. I don't know that you need a waterproof sack for your sleeping pad, but if you do, check out the Granite Gear ToughSacks, item GRG0084. They have sacks specifically designed for sleeping pads: 11L Tall and 16L Tall. Hope this helps you out, and good luck.

        What size bag will fit a Sierra Designs...

        What size bag will fit a Sierra Designs Pyro 15 degree 600 down bag in long? Sierra Designs says stuff size is 18" x 8" so I got the 8L 17" x 8" x 5" bag which doesn't fit. I roll up the sleeping bag as usual but I can't get it through the opening of the dry bag, which measures about 10.5" (when flat) or about 8" in diameter if you hold the opening open in circle. So it's supposed to fit by Sierra Designs specs. So does anybody know what bag size will fit? Space is at a premium, so smaller is better, but without having to spend a lot of time trying to get the sleeping bag in. Thanks!

        Best Answer

        Don't roll up your bag. Just stuff it in. Then it'll fit. The actual stuff size of your bag is 15L, not 8. 18 (length) x 8 (diameter) works out to 15L. Also, get the S2S Ultra Sil Compression Sack, not the eVac, it'll work better for stuffing.

        Hey thanks James! I tried stuffing it in without rolling it up and it still won't fit. You're right, the dry bag is too small and doesn't have the volume to hold the bag. So it looks like I'll have to get the 20L now. I don't care for most compression sacks, because they try to squish the sleeping bag into more of a round shape. I like the traditional "roll" shape (long and narrow width), which fits better into my pack. Thanks again for your help!

        what size bag is needed for a standard...

        what size bag is needed for a standard size down sleeping bag?

        Judging by what sizes are available, I would go with the 20L. The 8L could be too small for some bags (0°-15°F). These compress down nicely, and the 20L will have plenty of extra room just in case you need throw in a down jacket or some cloths as well.

        I use a 20L for my Western Mountaineering Antelope, and 13L for my Versalite. The Versalite packs down quite small, so I would imagine the 8L dry sack will only accommodate sleeping bags that are rated around 30-35F and up.

        I'm looking for an uber tough really large...

        I'm looking for an uber tough really large dry sack to line my 35L pack. Would this product fit the bill? Any other recommendations? I am not super concerned about it being absolutely waterproof but would find that a nice perk. Is this product super durable even with the sharp corners of prepacked food?

        This would work. It should be tough enough for most gear (open knives and pointy things excluded). The other one to consider is the Pacific Outdoor ( It is equally tough, but has a clear window so that you can see what's in the bag and where in the bag it is. A huge help!!!

        As Sandy says, this is fairly tough for most gear, but "Uber tough" it's not. You'll definitely pick up some weight in the process, but the best thing for what you're looking for is going to be the SealLine Black Canyon Dry Bag (item# CAS 0573) that's uber tough with an attitude.

        A couple other serious contenders are-
        SealLine Storm (item# CAS 0607)
        Outdoor Research Durable (item# ODR 0470)

        Best Answer

        You could always go the cheaper route and use extra large heavy-duty garbage bags to line your pack with. It gets the job done and is lighter than any of the other bags listed. Some even have a "stretch factor" included so that they won't puncture right away if they get rubbed the wrong way on the corners of prepacked foods, etc.

        I have an REI Flash 18 (18 liter pack) and...

        I have an REI Flash 18 (18 liter pack) and am wanting to get one of these packs for the stuff I don't want to get wet; Big Agnes Pitchpine bag, change of socks, etc. Should I get the 13L or the 20L? Thanks!

        I'm not sure why you told us about the Flash 18. If you want to put one of these in that pack, you should probably get the 13L because then you know it'll fit. You could also get the 20 and then just not fill it all the way. If you're looking for something similar in capacity, I'd get the 20 because it's obviously the closest in size. If it was me, I'd probably get the 20 and use it as sort of a liner, then roll it shut and clip it and zip the pack over it. Your call though.

        I just mentioned it because I figured some of the people that shop here probably shop at REI as well. The 18 liter seemed to be kind of in between the 13 and the 20 and I just wasn't sure how much "space" the bags take up on their own, unfilled.

        I think I'll go with what you suggested though and check out the 20, thanks for the advice.

        Does the eVAC sack have a bottom strap I...

        Does the eVAC sack have a bottom strap I can put a line through like the regular stuff sacks? I'm wondering if it would perform well as my food bag if being strung up on a line every night for 4 months.

        Best Answer

        No straps across the bottoms on these, but you have a couple other options. When you roll the sack over and buckle it, it forms a solid loop that you can pass your rope through or hook a caribiner on. Also, if you look at the photo above, you'll notice a small plastic eyelet next to one of the buckles, that will work the same way. Sort of an expensive potential pinata, but it should work as well for hanging food as anything.

        What is the difference between the eVent...

        What is the difference between the eVent Compression Dry Sack (Item #STS0002) and eVAC Dry Sack (Item #STS0043)? I know that eVent Compression Dry Sack is more expensive than the eVac Dry Sack. Does it mean eVent Compression Dry Sack is more waterproof than the eVAC Dry Sack?

        Best Answer

        The compression sack allows you to cinch the bag and its contents down (compress) in the event (no pun intended) that volume is an issue for you. Some folks want to compress their down sleeping bag and/or jacket down to its smallest size to make room in their pack. I prefer not to do that, as I think its better for the loft of the down item, and space isn't an issue in my pack. Additionally, the extra straps and buckles on the compression sacks always add quite a bit more weight to the bag, at least a couple more ounces.

        I bought a 13L and it is to small to fit...

        I bought a 13L and it is to small to fit my -20 hollowfill sleeping bag into. What size is closest to a standard sleeping bag stuff sack?

        Depends on the volume of the sleeping bag when it's compressed down. The 20 L (next size larger) sack should probably fit your bag along with maybe some other items (spare clothes perhaps). I pity you for having to haul around that massive sleeping bag.

        I want a dry bag to store my DSLR camera...

        I want a dry bag to store my DSLR camera in because I would really like to take it on future expeditions. Would you trust this bag to keep such an expensive electronic safe?

        I bought this dry bag to keep my DSLR camera dry. It did the job in Zion NP on a canyoneering trip, did its job everywhere, except on the glacier in Alaska. Bag got soaked somehow, and continued to soak through for the rest of the trip. Even with this bag sealed water vapor got into my lenses and condensed inside of them. Thank God it evaporated out. Just beware it being exposed to consistently wet cold conditions

        I know Sea to Summit makes another eVAC...

        I know Sea to Summit makes another eVAC sack that is a compression sack WITH straps.Just to clarify-- is this eVAC sack ALSO meant to be a compression sack?